How to Check Synthetic Ruby Under a Microscope - Curved Striae, Gas Bubbles, and Quench Crackled
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- Опубликовано: 17 май 2024
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Time stamps:
1) Answer to which Rubies are Synthetics (min 2:11)
2) Equipment Recommendation - Darkfield Gem Loupe (min 3:19)
3) Equipment Recommendation - Gem Microscope (min 4:38)
4) "Curved Striae" under the microscope (min 5:35)
5) "Gas Bubbles" under the microscope (min 7:07)
6) "Quench crackled" under the microscope (min 8:30)
7) Final Thoughts (min 9:50)
Gem Equipment [Amazon Links]:
a) Professional 18mm 10x Handheld Darkfield Loupe LED with Flashlight, Dark Field Hastings Loupe Magnifier
Link: amzn.to/2GCTLBo
b) AmScope GM400TZ-M Digital Trinocular Gemology Stereo Zoom Microscope
Link: amzn.to/3jz0736
Other RUclips Ruby Videos links provided below:
a) 1 carat Ruby microscope videos - includes, unheated, heated, flux-residue (flux treatment) - • How much does a one ca...
b) Glass Filled vs Unheated ruby - • How to tell the differ...
For additional pictures and explanation regarding synthetic gemstones (ruby, sapphire & emerald) I would recommend checking our very popular blog post: www.buygemstone.info/differen...
In this video, we look at three different synthetic rubies under the microscope - Curved Striae, Gas Bubbles, and Quench Crackled. All three have inclusions which help us distinguish between synthetic and natural rubies.
If you have any question or comments please feel to write below or email us at sales@thainativegems.com 
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![How do you KNOW what a gem is? [Refractometer Tutorial]](http://i.ytimg.com/vi/egpxFVwtNRo/mqdefault.jpg)
Amazingly well taught. Thank you! Exactly what I was looking for.
Just saw this comment. Sorry for not responding earlier. Glad you found the video helpful. I am hoping to make other synthetic videos soon (if time permits!)
Best Regards,
Tarun Gupta, GIA GIA
Thak you very good companion of the synthetic ruby. Highly appreciated.
Thank you. I will try to make more informative videos soon.
Best Regards,
Tarun Gupta, GIA GG
Very informative. Thankyou.
Thank you so much for sharing your knowledge to us. I really appreciate you for this virtue action. May bless you.
Thank you so much
Hi, I was thoroughly impressed with this video and others. Do you personally do any appraisals and/or gem identifications? Where is the best place to send a ruby that I suspect is synthetic. I don't want to pay a mint just to have a place like GIA say, "yep - it's synthetic". More useful would be somewhere that is willing and able to identify which process the ruby was made and maybe with some photomicrographs included that show definitively what it is, so I feel it's worth my while to send such stones in (because they can do something that I cannot -- e.g. creating a nice photomicrograph of any inclusions or telltale signs) and it would also serve as a learning tool for me as I'm learning (slowly) but obviously not adept yet. I feel as if I'm floundering a bit, but this is likely because I've no genuine rubies to compare anything with.
Very useful video. Thanks
Thank you! So much good information!
Glad it was helpful!
Many thanks to you for sharing this valuable and informative video to us, when you have time free, would you please make some video for " " inclusion for the synthetic Ruby stone only " if you can . thanks
Thank you very much! 😁👍🏻 It’s was really hard for me to see the curved lines in the first Ruby. But you have done a great job educating the common lay person. I appreciate that you posted links and showed what equipment we would need to look for ourselves. I myself just really enjoy gemology. I’m sure there are a lot of other people out there that also want to look into gemstones, just because.
I guess I already know where to look so wasn't very difficult to see the curved lines. I do hope these videos help the lay person learn about the beautiful world of rubies and start trusting what they are buying.
Thanks for the positive comment.
Regards,
Tarun Gupta, GIA GG
You nailed it sir. Really aporeciate your efforts and respect you professionalism..
They show up extremely well with crossed polarized light.❤
@@christopherleubner6633 Got a link to where I can see how to create that? Thanks
@@gigisdiamonds Lets see if we try to do this with some of our synthetics. If time permits will try to make a video of it.
Thanks for watching our videos.
Best Regards,
Tarun Gupta, GIA GG
Extremely interesting.
We are very thankful to you
Great work sir keep it up
Thanks and welcome.
Regards,
Tarun Gupta, GIA GG
Great video
Thanks!
Seeing the natural stone would have been nice.
We have done natural rubies in other videos already. Links provided below:
1) ruclips.net/video/ornjTJv9pl8/видео.html
2) ruclips.net/video/XODG8dB6phE/видео.html
Regards,
Tarun Gupta, GIA GG
The last spicer like whitish checkerboards , is what I just saw it for the first time, thank you
Thanks for positive comments.
Regards, Tarun Gupta, GIA GG
Very Informative!
Glad it was helpful!
awesome info ❤
Very good vlog for new comer , keep it up 👍
Thanks a lot.
Regards,
Tarun Gupta, GIA GG
great vid man
Thank you!
Thanks for shearing details sir
Your welcome!
appreciate the helpful info
Glad it was helpful!
Really good information in this video, I can’t wait to inspect mine.. I would’ve liked to have seen the real ruby under the microscope though. Good video, thanks!
We have done natural rubies in other videos already. Links provided below:
1) ruclips.net/video/ornjTJv9pl8/видео.html
2) ruclips.net/video/XODG8dB6phE/видео.html
Regards,
Tarun Gupta, GIA GG
Literally wasted that whole video to see the real ruby!
Nice piece of information and upvoted.
I have one doubt irrespective of whether it's natural or synthetic isn't the same corundum mineral used in both ?
Thank you for upvote. Yes both natural and synthetic are same chemical composition, however, one is rare and other you can produce unlimited supply. That is why natural rubies retain their value while synthetics have no value.
Regards,
Tarun Gupta, GIA GG
@@ThaiNativeGems "synthetics have no value".... Well, "gold plated jewels have very low resale value" would be more accurate isn't?
Gold plated jewels will rapidly degrade over time. They are fake, "not real gold" and will wear out and eventually loose all their value.
On the other hand, synthetic ruby are not fake and will wear at the same speed as the "real ruby". If the craftsmanship is good, this synthetic jewel will keep their value for eternity and cost less. As long as we are talking small inexpensive ruby (majority of the individual sales in the market).
Very good explanation
Thanks!
Very informative sir! Could be used to indicate sapphires as well, right?
Yes, but for sapphires seeing curved striae is a lot more difficult and you have to use diffusion light or filter, etc., I might make a video regarding this in near future.
Thanks & Best Regards,
Tarun Gupta, GIA GG
Useful Video Thanks A Lot.
Glad it was helpful!
Awesome vid man. Do any of these flame fusion rubies have any uses/value to it? And who would buy them?
Hi Karl,
There is large market for synthetic gemstones as they have exact property to natural gemstones and are really cheap. Rubies advantages (both natural and synthetic flame fusion) is they are hard & strong stones - Mohs scale 9 - so are good for everyday jewelry like rings or earrings.
They are definitely cheaper than using natural gemstones and do look a lot nicer as well.
Thanks for the question.
Best Regards,
Tarun Gupta, GIA GG
I guessed no 3. Oh well. Interesting video. Thanks! Good information.
Thanks. Hopefully will make some more soon.
Best Regards,
Tarun Gupta, GIA GG
Important video ❤️
Tk u so much fr this wonderful piece of info. Appreciate if you can show me more examples and a comparison study.
I will try to get more of other gemstones. Thanks for your comment.
Regards,
Tarun Gupta, GIA GG
Thank you
Hi. I need some Informations about Rubies so, could you possibly help me out?
Good teaching sir❤🎉
Thank you.
How I wish my grandfather’s Ruby ring be check under the microscope too.
thank you, it was great!
Glad you liked it!
Boule ruby is a nice stable alternative to mined ruby. I have cut many. The cush cut you showed also showed lines going in a totally different direction. The is evidence of a bad prepolish.
Agree. Prepolish of these stones is not of very good quality. Thanks for sharing your expertise.
Regards,
Tarun
Thank you , was helpful information I have one pic of ruby but I can’t find if original or not . What is the best way to find out or what can you advise me to do. Thanks
Best way is to send it to reliable third party lab, which will have all the equipment to check if the stone is natural, synthetic or something else.
love your channel
Thanks!
Have you done a video on opals….the ruby video was great (close up of the real ruby would’ve been good) the ruby video is first I’ve watched so I’m not sure if you’ve already covered opals, if not one would be brilliant! 😊
Haven't covered Opals yet. I will try to make one in a future video if time permits.
Thanks for your comments.
Regards,
Tarun Gupta, GIA GG
Thank you!
You're welcome!
Super useful.
Glad it was helpful!
Regards,
Tarun Gupta, GIA GG
Need more videos,,thank you
Working on it! Thanks.
Thank you.
You're welcome!
Hi i have a necklace to appraise . I have a Little issue on identifying the Gems . I used to be Very Good . Già 26 years ago but still ....Could we talk?
I buy 4ct ruby ,whit do process
Tell me
Thank you so much 💓
You're welcome 😊
Can this review be done with the Apexel 200 x attached to the phone? Phone Xiaomi Redmi Note 10 Pro
I actually don't know personally has never have used it. I am sure with technology now days, anything is possible.
Regards,
Tarun Gupta, GIA GG
Hi, thank you for the video. Is "synthetic" different or interchangeable with "lab-grown" here?
Both are the same thing. Synthetic is what people in the trade call 'Lab-Grown' stones...
I guess Lab grown sounds more friendly than synthetic. :)
Thanks for question!
Best Regards,
Tarun Gupta, GIA GG
I have a ruby eith the chicken mark can a natural have it too
Thanks 🙏
You’re welcome 😊
I picked the right one ☺️
Thanks in participating!
i know nothing about gem (i only know microscopy, but not gemology), but i guessed right.
1&2 : too opaque
3: too pink, most beautiful, it's a trap
but that's probably not how it works, and i just got lucky :)
Great job! Better then most people in trade. :)... Thanks in playing the game.
Regards,
Tarun Gupta, GIA GG
What about the czrochralski method? Is it distinguishable and how?
It consider the same group as flame fusion rubies which is distinguish by 'Curved striaed' inclusions as shown in the video.
Regards,
Tarun Gupta, GIA GG
Hi, so have the synthetic ruby been treated color or clarity?
Some people treat synthetic ruby to make the clarity 'lower' so it looks more like natural stone than synthetic. There is goal is trick the consumer. :)
Regards,
Tarun Gupta, GIA GG
สวยมากๆค่ะ
Hello if the lining is straight and not curved its natural ?
If the internal crystal lines are straight and angular, yes, this is a strong indication that the ruby is natural.
i have a ruby it has only one inclusion in the middle and 3 bubbles under one prong othervise is totaly clear on certificate is said natural but i was in aukction where they think it may be synthetic what will be the best way to tell
@@ThaiNativeGems
the lines i see on facets when i look inside stone are straight not curved and they are not connected to the lines of next facet
Where can I start practicing looking at these stones?
There are gemology courses in many reputable labs like GIA or AIGS in Thailand. I am sure there are others. If you are looking to learn, I would like welcome you to the world of gemology!
Best Regards,
Tarun Gupta, GIA GG
Excuse me sir... how much per ct synthetic ruby... thank you for your answer...God bless...
Synthetic ruby price is pretty much the cutting cost. The material itself not worth much. So usually ranges from US$1 to US$10 per carat depending on how well cut the stone is.
Regards,
Tarun Gupta, GIA Graduate Gemologist
@@ThaiNativeGems thank you sir...god bless you...
Is there a link to access the Amazon kit?
If interested in a good microscope I do recommend this one (link provided below).
AmScope GM400TZ-M Digital Trinocular Gemology Stereo Zoom Microscope
Link: amzn.to/3jz0736
Best Reards,
Tarun Gupta, GIA GG
@@ThaiNativeGems Thanx😁
I have a ruby which has some looks like air bubbles under microscope. But they r not spherical. How could we know it is natural or not?
Hi David,
If inclusions are not round or spherical (or angular-like) then most probably they are natural clear crystals - or called negative crystals. This proves that your ruby is natural. If they are no cracks and they are fully intact then it proves you have an unheated ruby.
For more information regarding ruby inclusions and treatments I recommend reading our blog post here: www.buygemstone.info/2012/09/28/natural-ruby-buying-treatment-guide-how-to-buy-and-tell-the-difference-between-natural-unheated-heated-new-glass-filled-ruby-treatment/
Best Regards,
Tarun Gupta, GIA GG
what lighting are you using?
Its called a dark field light which is part of any normal gem microscope.
Regards,
Tarun Gupta, GIA GG
Regards, I have question, how can I spot under the microscope if my ruby is reconstituted or glass filled ruby or if it’s natural. I did the UV test and it glowed very bright red in the dark but I have doubts it can be glass filled with ruby pieces. How can I tell
I would recommend getting it certified with respectable third party certificate or verify with a gemologist. Impossible to give advise without seeing the stone personally.
Best Regards,
Tarun Gupta, GIA GG
Usually the top is ruby and the bottom is red glass. The glass will not glow under uv light. Most commonly such stones are hidden in the setting with only the table and side facets visible. Also synthetic ruby is usually much more florescent than natural because natural has iron impurities that quench the fluorescence of the Cr3+ ions.
Is there a way to treat these heated rubies in such a way to make them luke 90%+ like the natural stones, but they don't do it because it is too expensive? I ask because those who make fake branded watches basically do a cost/profit calculation and make the best bang for the buck. I was wondering if it's the same with ruby...
The gemstones above if I actually show to regular people in the trade a lot of them would say they are 'natural' as they have inclusions and synthetics are usually clean. So, they already look 90% natural. Heating these stones is not expensive and a lot of people do it. The only issue I have is when they don't disclose it to the consumers. This causes a lack of trust in the industry overall.
If you are asking if there is a way to remove 'synthetic' or man-made' characteristics completely from treatments (including heat treatment), the answer is no. It is also for 'big' labs and gemologist interest to investigate and make sure the stone is natural and not synthetic otherwise, it will hurt the overall gemstone industry.
Thanks for the question & Best Regards,
Tarun Gupta, GIA GG
Yes you can look for inclusions of zircon in them. You will see stress cracking in the ruby originating at the center of the zircon crystal. A zircon crystal looks like 2 pyramids stuck together at the base.
what about flux ruby ? not flame fusion , can you explain please
I recommend for extensive microscope videos with different treatments to check this video: ruclips.net/video/ornjTJv9pl8/видео.html.
This includes a flux ruby microscope video.
Regards,
Tarun
I need buyer of ruby gemstone
I have a suspected ruby that lights up a diamond tester. Is that a good indicator of a real ruby? It doesn't have any of the sign's you outline in your video.
Ruby shouldn't light a diamond tester. It might be a pink or red diamond or phosphorus doped SiC (mossanite)
There is a reason why it is called a 'diamond tester' and not ruby tester. Ruby and diamonds are made of different materials, hardness, etc., so it should NOT light up in a diamond tester.
What was discussed in the video is methods gemologist uses to see if stone is natural or synthetic (lab grown) rubies. Both are made of same material, hardness, so using this type of testing is no point.
Now to distinguish the different type of gemstones, we require to do other checks like RI (refractive index), SG, stone hardness, etc., I might make future video regarding this.
Best Regards,
Tarun Gupta, GIA GG
Good explanation, but we didn't see the real natural sapphire under the microscope to know and see what's inside ،F , Thanks so much .
Do lab created rubies have corundum?
Not sure how to answer this question. If you mean if Rubies is part of the corundum family, yes it is. By definition, Corundum is species while rubies are a variety within the corundum family (sapphires are also included in this family).
Now do lab-grown rubies have natural corundum mixed it in? No, it doesn't.
Best Regards,
Tarun Gupta, GIA GG
Sir what are the microscopic properties of natural ruby
We have made various videos on natural rubies, which I have provided links below:
a) ruclips.net/video/ornjTJv9pl8/видео.html
b) ruclips.net/video/UwN6OiBWkl0/видео.html
c) ruclips.net/video/XODG8dB6phE/видео.html
Best Regards,
Tarun Gupta, GIA GG
Buy the way the stones you have there have no fire and suck just like all the ones I got, I know I need to spend 50k a carat right?
If you want to 'top' class ruby, yes you have to pay good amount of money as they are exceptionally rare.
Pinkish red
Hello i have 1 pcs or ruby stone how can you tell if its real or not . I saw my ruby has a natural inclusion rays inside
To be 100% sure I do recommend sending it to reliable third party gem lab or to experience gemologist.
Regards,
Tarun Gupta, GIA GG
Sir in this video how to recognise real ruby if these errors not have in stone then how to confirm real ruby
Best way to verify if the ruby is real or not is to show it to experience gemologist or submit it to reliable 'third' party laboratory.
Examples of labs which you can submit your stone I have provided our blog post link here: www.buygemstone.info/2017/03/10/what-lab-or-certification-is-the-best-for-checking-your-expensive-ruby-sapphire-or-emerald/
Best Regards,
Tarun Gupta, GIA GG
I got it right
Congratulation!
What does it take to find a ruby with fire , been looking 10 years and got nothing but disappointment , I got a hell of a lot of rubies, do they even exist?
If you looking for similar 'fire' to diamond then 'no' rubies can match luster, sparkle, or fire of a diamond. The main charm of rubies is the color.
these lines you showed , can they be from cutting machine , i mean bad quality cutter or bad skill?
Very true, curve lines can be seen due to bad polishing as well. That is why it is important to distinguish surface polish lines and internal lines (which will pass through multiple facets). Hope that makes sense.
Thanks for your comment.
Best Regards,
Tarun Gupta, GIA GG
@@ThaiNativeGems i watched a documentary of kashmir sapphire , and downtown there was an old man cutting gems using a barrel and a stick to rotate the barrel back/faward , despite the loud noise , low quality cut , he was happy doing that for almost 15 years !!!
Good work gentleman. But you didn't give a video of the natural Ruby to compare. Did you forget it?
We have done natural rubies in other videos already. Links provided below:
1) ruclips.net/video/ornjTJv9pl8/видео.html
2) ruclips.net/video/XODG8dB6phE/видео.html
Regards,
Tarun Gupta, GIA GG
I have two rubies. Can i send u the video to check please?
pl. send to us also
I wonder if you could help me with my Ruby. It’s over 75 years old since it’s been in my family and people keep telling me it’s man made. Help please!!
I recommend to get it checked from qualified gemologist or reliable third party certificate provider.
Example of where you can get your ruby certified you can read on our blog post here: www.buygemstone.info/what-lab-or-certification-is-the-best-for-checking-your-expensive-ruby-sapphire-or-emerald/
Best Regards,
Tarun Gupta, GIA GG
Is it possible that real Tanzanite have bubbles inside stone?
Like most natural crystals like real Tanzanite (or Zoisite crystal), they should not have any gas bubbles.
Please note that sometimes an inclusion can look like gas bubble, but in fact if you zoom in with strong microscope you would find its transparent spherical natural crystals.
Therefore, it is important to distinguish if it is actually gas bubble you looking at or natural crystal inclusions.
Hope that helps.
Best Regards,
Tarun Gupta, GIA GG
U.V. light helps some, naturals don't scream bright red under U.V., the glow is more subdued.
Really depends on origin. Some Burmese rubies will glow under UV light due to lack of 'iron' content in the crystal. Thanks for your input and insights.
Best Regards,
Tarun Gupta, GIA GG
Im stopping at 2:34 for a reason. Given this camera and such, and my display, things get skewed. Its inherit with these things as you know.
The one you say is pigeion blood...that pink flash from the pavillion says otherwise. Fron the crown, i can see hints of something ever so barely purple that i know for fact you find in the burmeese stuff. Seeing the stone and the cert, i know.
That last one with that flash? That reminds me more of Thai rubies-not saying that as a bad thing. The rubies ive seen typically have a red flash and you might call comparitiveky monochroic-with the silt in there too.
That purple hint in the crown says Burma but i wouldbt say pigeion blood, but i see that pink flash that says Thai maybe. Is it between camera, light and my display skewing things maybe?
Thanks for your input regarding 'color' judgment which is very personal and subjective. I also agree that camera doesn't capture color well - especially reds or greens for some reason.
Now regarding these stones as you know three are synthetic and only first one is from Mozambique. None are Thai or Burma ruby origin - as lab grown 'synthetic' stones have no origin. :)
Thanks for you opinion and inputs.
Best Regards,
Tarun Gupta, GIA GG
Great english
Thank you for sharing your knowledge. It would be nice if you did a video that proves if it’s real.
Can ultra violet light prove a disprove a real stone ?
Ultra violet unfortunately cannot prove or disprove if stone is real or synthetic. The only reliable method is through microscope to check the inclusions or send it to reliable third party lab.
We have made other videos with real rubies microscope images.
This one is most comprehensive which also includes different ruby treatments: ruclips.net/video/ornjTJv9pl8/видео.html
Best Regards,
Tarun Gupta, GIA GG
@@ThaiNativeGems Thank you so much for the info 👍🏻
How to sent you a picture
We won't be able to tell if stone is real or synthetic with an image. Need to see the stone in person.
Best Regards,
Tarun Gupta, GIA GG
@@ThaiNativeGems I found it after digging under the hill
Are you referring of surgeries.
Surgeries? In Rubies? Maybe, :)
So synthetic is the same, has slightly different imperfections than natural ruby, but often has higher quality.
There literally is no reason anymore to go for natural gems as they are just the same thing but you are wasting a lot of money. And no, they do not hold their value any better nor are they inherently more valuable - the value comes from what people are willing to pay and when they notice that synthetic is actually better as you can get exactly what you want for a fraction of the price then the value of natural gems plummets and while synthetic stays the same (or even rises).
Some pay more for natural because they believe it has some spirtiual energy.
Hi,
Apologizes for the late reply. For some reason, I just now saw your comment and it seems like a very popular one.
Also, with the popularity of synthetics diamonds right now, there is a perception out there that why should anyone pay more for natural stone when you can get an exact replica in synthetics.
Synthetics rubies have been created in the 1800s, so it has been in the market for a long time. So, we can actually make judgments regarding if they have retained value or not. And unfortunately, the simple answer is no. With improvements in technology and more economies of scale, the material cost of synthetic rubies is pretty much 'zero.' The only cost is the labor cost in cutting the stones to shapes we want them to be. Like the stones above none will cost above US$10 per piece. Unlimited supply and lack of scarcity do not help in prices.
Natural rubies even though it has been attacked with synthetics for two hundred years have actually gone up in value. In fact, since I have started in the trade 15 years ago, I have never seen it go down. Though there are many qualities of natural rubies, one has to look at investment grade options (unheated, clean, nice red saturation, etc.,) and not commercial grades which are lower quality rubies which do compete with synthetics.
Now the bigger question is how do people in general value items - why are certain properties value higher than others, or why does certain currency value over others - or why are crypto-currency valuable (when you can create unlimited of them)? The simple answer is trust, history, what people perceive, and what they are willing to pay for an item. Gemstones especially the big three - rubies, sapphires, and emeralds do have a very long history which emperors, kings, and governments have fought for them. They fit in the same historical category as gold and silver.
Finally, in terms of waste money, consumers nowadays have a lot of things that don't retain in value at all but will pay a premium for. Cars, an Apple iPhone, computers, or any other electronic device, etc. If only people are logical. :)
Anyways I have actually written a blog post regarding synthetic diamonds that discusses these issues so if anyone wants to read it, they can click here: www.buygemstone.info/2018/09/04/what-are-synthetic-diamonds-man-made-diamonds-and-will-they-affect-natural-diamond-trade-or-value/
Regards,
Tarun Gupta, GIA GG
@@ThaiNativeGems "and what they are willing to pay for an item."
And nobody disagrees with that - it just is the case that people pay for what they want to pay, even if it like with natural gemstone not providing anything for the extra cost.
"They fit in the same historical category as gold and silver."
No, this is just a blatant lie - gold and silver are elements, you can not just simply "create" them with chemical processes. They are finite in quantity by nature (unless you go to the extremely difficult process of manipulating atoms - which right now is many many times more complicated, expensive and dangerous ).
@@ABaumstumpf Sorry if you misunderstood when I stated they fit in the same historical category as gold and silver.
First, yes in terms of the periodic table (thanks for the chemistry class) we cannot create gold and silver. It will create miniature atomic bombs (nuclear fission or fusion). But, do you know how much both these elements mined per year. With a simple 'Google' search, 2,500 to 3,000 tonnes of gold is mined on average, while 25,000 tonnes of silver was mined in 2020.
How many rough gemstones do you think are mined on average? Around 5,000 KGs (or 5 tonnes) a year, of which only 3% will be investment grade. So, what is more scarce?
Now if you believe synthetics are perfect substitutes to natural gemstones, I can say the US Dollar is a perfect substitute for gold and silver and a lot easier medium of exchange? So why do gold and silver retain their value, even though they do not serve that purpose anymore?
This is where the historical context and value come in.
Anyways, let us agree to disagree, but thanks for the fruitful discussion. :)
Regards,
Tarun Gupta, GIA GG
@@ThaiNativeGems Gold and silver cannot be synthesized. They also have inherent value in industrial and electronics applications. So there will always be a substantial demand and a limited supply, driving up the price. It's not as simple as "they're valuable because we all decided that they're neat." It's not a great analogy to compare gold and ruby.
Классно!
I have a really funny meme for ppl asking to identify minerals / gemstones w a pic on FB Insta ect. Fortune teller w eyes rolled back & crystal ball. Oh great Gem gods & spirits, tell me what I see.....(subscribed)
Why not use a UV light, from what I heard, natural rubies lumines under uv light
Good question Peter,
Actually, both synthetic and natural rubies illuminate under UV light. In fact, synthetics usually illuminate more as they lack the 'iron' content which makes the ruby fluoresce less. Chromium element makes the ruby fluoresce which also makes the corundum stone 'red' or classified as a ruby.
In fact, one way a lot of dealers try to see if the 'natural ruby' is more premium or not by checking under UV light. The more ruby fluoresces, the less iron content there is and therefore more desired. Usually, Burmese rubies have this trait, while Mozambique rubies don't (as they usually have more iron content, so are darker). Some labs like GRS take this into account before classifying the ruby as 'pigeon blood' on the front page of their report.
So, there is no way to check if ruby is natural or synthetic through the UV method.
Anyways, thanks for the question.
Best Regards,
Tarun Gupta, GIA GG
The curved Stria look more like the grinding marks from facetting the gemstone. Your example of the round cabochon's gas bubbles did not have these surved stria, nor did the stone with inclusions from quenching process. This curved stria indicator, seems to be an indicator of quick gemcutting where the grinding marks are not polished out. Considering this would NOT be seen on a high value gem, it is an indicator of a less expensive or poorly cut gem. So yes, it can be an indicator of a cheap stone, which usually is synthetic, but you did not explain why the curved stria exist and what they represent.
Thanks for your comment and I do agree the video quality isn't very clear and it is not easy to capture curved stria with such small 'rubies.' It can be mistaken as bad polish. Though in my eyes when seeing under microscope I did see curved stria which went cross the stones - in the internal part of stone and not on surface facets (which can mistaken for bad polishing).
I will try to get a better sample synthetic flame fusion ruby in future and try to see if I can capture it without having 'bad polish' cut stone.
Now regarding the other synthetic rubies, cabochons with gas bubbles and last the one with with quenching process, but didn't have curve stria, they actually both do have it but again, it wasn't easy to capture with my microscope camera.
Anyways, thanks for your sharing experience and expertise.
Best Regards,
Tarun Gupta, GIA GG
Great video but you gotta show us the real ruby for comparison
Hi Sean,
Thanks for the compliments.
We actually have done natural rubies in other videos already.
Links provided below:
1) ruclips.net/video/ornjTJv9pl8/видео.html
2) ruclips.net/video/XODG8dB6phE/видео.html
Best Regards,
Tarun Gupta, GIA GG
hey but if they are inclusions or identity of a synthetic ruby that is inside. It is not on the outside because you show without facets that show poorly made carving but not. it is inside the ruby. you identify it by the reflection of the Light. not because that detail is seen by the synthetic creation of the piece
Hi Sergio,
Both natural and synthetic ruby (or any other gemstones) have the same property so from 'outside' facets you cannot tell the difference between the two. They both have the same moh scale hardness "9" and have the same chemical compoistion. Hardness determines if the facets are poorly shaped which helps us distinguish between 'softer material like glass or plastic' to harder substances like ruby or diamonds. However, synthetics have the same property so we cannot use this method.
The only way to tell is to investigate how the crystal was formed - naturally or man-made lab. We can do this by 'finding clues' under a gem loupe or microscope. If the stone absolutely clean inside then the only way to tell the difference between natural or synthetic is by sending it to a bigger lab, which will investigate using more sophisticated equipment.
Hope that makes sense.
Regards,
Tarun Gupta, GIA GG
You showed us how to tell a synthetic Ruby but can you show us how to tell what a real ruby looks like under the microscope
We have done natural rubies in other videos already. Links provided below:
1) ruclips.net/video/ornjTJv9pl8/видео.html
2) ruclips.net/video/XODG8dB6phE/видео.html
Hope this helps.
Regards,
Tarun Gupta, GIA GG
I like synthetic better, it has the same properties as the natural stuff but i can get bigger raw and cut jems
Synthetic rubies have been around for long time and prices are now extremely cheap and only cost is 'cutting them.' In terms of look and overall hardness, I do agree with you.
But in terms of long-term investment there is no value. So, this is all very subjective.
Anyways, thanks for sharing your opinion on this.
Best Regards,
Tarun Gupta, GIA GG
@@ThaiNativeGemsHow Chinese cut cheap corundum under 100usd is it automatical robot machines (mass produced) or human hand cut ? How to know if robot CNC-cut ?
Forgot to show the real one..
We have made quite a few natural rubies microscope videos in the past. I recommend to see this one for all the different treatments in natural rubies: ruclips.net/video/ornjTJv9pl8/видео.html
Regards,
Tarun Gupta, GIA GG
The not great cut is what made me pic the oval.
Smart choice! Very true that natural rubies are 'cut' prefect-ly or symmetrically so to save as much weight as possible. Hope you found the video useful.
Best Regards,
Tarun Gupta, GIA GG
I wish these were compared to a real ruby too
We have done natural rubies in other videos already. Links provided below:
1) ruclips.net/video/ornjTJv9pl8/видео.html
2) ruclips.net/video/XODG8dB6phE/видео.html
Regards,
Tarun Gupta, GIA GG
⌛👋
show us how natural once looks like
We have done natural rubies in other videos in past. Sorry for not including it in this video.
Links provided below:
1) ruclips.net/video/ornjTJv9pl8/видео.html
2) ruclips.net/video/XODG8dB6phE/видео.html
Best Regards,
Tarun Gupta, GIA GG
2:29 So, what's the point???? Why do peoples are not buying cheap, real, but synthetic ruby?
Hi Alexandre,
One big reason is 'synthetic' rubies have no 'value.' Once bought you won't be able to get any money back.
In the other hand, high-quality natural rubies overtime goes up in value so if you want to 'invest' in gemstones or jewelry it is always better to get natural over synthetics.
Best Regards,
Tarun Gupta, GIA GG
@@ThaiNativeGems For high-quality natural rubies, you are right.
Unfortunately, this is for "rich family". For the vast majority, "we" buy rubies to wear them. These cheaper "daily wearable ruby" will not get any ROI. So, for the majority, a well cut synthetic ruby is a better investment (understand that you will loose money on both case, but less with a lab made one of similar size).
Thank you Tarun, I appreciate the fact that you read and answer my comment. Have a wonderful day.
Alex from Montréal