So, the generalized gems included what? It includes a gem stones and organic ,inorganic two kinds.
Inorganic gem stones and artificial natural gem points. Natural gems in natural geological effects of gems, they formed by a single mineral crystals or by many single, mineral and rock, as of diamond, ruby, sapphire, peridot crystal (single mineral) and jade, She too cui, soft rock); too ( Artificial gem stones include synthesis and fake (also called imitation stone). Synthetic jewel is a natural stone, according to the people of the chemical composition, the formation of physical and chemical conditions in the laboratory or factory in the synthesis of inorganic gem “, their physical and chemical properties of natural gem with same or basic same, such as artificial synthetic diamond, ruby, man-made crystal, etc. Fake means appearance and some stones of similar goods such as plastic, glass or inorganic compounds, their physical and chemical properties of natural gem is similar with no certain contact. These items are: the imitation diamond cubic zirconia (the so-called “diamond”), the Soviet union the plastic imitation pearl, imitation jadeite green glass etc.
Its formation and organic gem refers to the related biological or biological effects, such as stones, pearl, amber coral etc.
