Twenty years ago, the gold bars have changed color. Have you bought fake gold?

The gold bars that have been kept at home for 20 years have changed color. I suspect that they are fake, so I can find Xiao Yan to identify it!
Twenty years ago, the gold bars have changed color. Have you bought fake gold? See what happens after Xiao Yan burns [Xiao Yan strikes an iron bracelet]
Hello everyone, I'm Xiao Yan
Interested in collecting, there are heirlooms at home, and I am curious about the true and false heirlooms left by the ancestors
Xiao Yan has been focusing on silverware for 20 years, sharing his knowledge of jewellery and play with you every day
Want to know more, remember to follow me xiaoyan.page.link/V9Hh
Join the channel member xiaoyan.page.link/PZXe
#Xiaoyan Iron Bracelet#bullion#Discoloration of gold bars

[@janqewty8264]

老板！你好，我想问一下如果是黄铜和合金烧过会变成什么颜色

[@SuperQ_Official]

turn into dark red

[@manlo4851]

閆老闆應該收取一些火檢費用吧!😄

[@RolexTFH]

真金不怕火來燃燒!

[@ethanwang2800]

閆小老闆，您少了道程序沒演完整。 過火後，通常不是應該重新過秤一下，防止他人回來訛錢。

[@newagegaga]

如果是18k金的話火燒也會,变黑,但用化學济洗洗就會变回原來金色

[@user-mh4zj7dn1l]

想想其他題材吧⋯⋯乏了

[@massimilianoilardi3571]

Che metallo e gold

[@user-bn8mj3nr1z]