time:2022-10-17 source:sznbone Views:
A gem is a stone or mineral that has been polished and polished to meet the requirements of jewelry. The beautiful color, high hardness, in the atmosphere and chemical action can not change the precious ore. It can be used as instrument bearing, abrasive agent, decoration, etc. It also refers to precious stones.
Gem jewelry customization are mainly blue sapphire, ruby, diamond and emerald the four different species, visible is a kind of gem diamonds, refers to a specific kind of gem diamonds, precious stones refers to is the sum of the four kinds of gems, emerald is the king of emerald, so simply, gem is diamond, ruby, sapphire, and emerald of these four, The concept of a visible gem is broader than that of a diamond, which is a type of gemstone.