Semi-precious
Citrine is a stone of the quartz group, distinguished by delicate citrus shades. A mineral beloved by jewelers for its simplicity
Property Description Formula Ca2Al3(SiO4)(Si2O7)O(OH) Hardness 6.5 - 7 Density 3.35 g/cm³ Refractive index 1.691
Silver has been known to mankind since ancient times. Coins, cutlery, and jewelry are made from it.
History and origin Science has established that the properties of amethyst were studied by the Sumerians. In Egypt, stone
When receiving a bracelet or pendant with an agate stone as a gift, a person often has no idea
One of the famous gemstones is topaz. When properly processed, it becomes truly beautiful.
Commission trading benefits both buyers and sellers. You can organize such a business in specialized
For whom are the changes Resolution of the Government of the Russian Federation dated July 14, 2022 No. 1188 (hereinafter
General marble care To extend the durability of marble products, they should be periodically and thoroughly wiped
Gold crowns on teeth have not lost their popularity (although it is, of course, not the same as
