2023 Gem and Mineral Show in Tucson. Amazing lighted Crystals, Amethyst, quartz.

Crystals are solid materials whose atoms are arranged in a highly ordered, repeating pattern extending in all three spatial dimensions.
Amethyst is a purple variety of quartz, a mineral composed of silicon dioxide. It is often used as a gemstone and is prized for its beautiful color.
Quartz is a common mineral found in many different types of rocks. It is the second most abundant mineral in Earth's continental crust and is widely used in many different applications, including as a component of electronic devices, in jewelry, and as a decorative stone.

[@JhonDiamond2021]

very great show, very precious mineral and tucson rock. prestigious treasure exhibition, friends.