Types of stones

507-carat Cullinan Heritage Diamond Diamond is the hardest mineral, a cubic polymorphic (allotropic) modification of carbon (C),

Alexandrite is a mysterious, mysterious stone that was discovered quite recently. No wonder this mineral was

Peridot stands out for its color variability. Under the influence of lighting, a stone can significantly change its shade. This

Federal Assay Chamber (FAP) Decree “On the formation of ... the chamber” General information Establishment date 28

Charoite is a stone so rare that it is mined in only one deposit on the planet. Not surprising,

Formula BeAl2O4 Color Bluish green, brown, brownish green, green, gray Luster Glass Transparency Transparent, translucent Hardness

The world's largest gold bar is located in one of the Japanese museums. It weighs 250

The word ounce is translated from Latin as “trifle” or “little.” This term began to be used in

History of origin Carnelian is a mineral that was used by ancient people. Find primitive tools

Category Oxides (minerals) Name in English. Quartz Formula SiO2 Group Group of glass-forming oxides Color White,