Ruby's English name is barklyite or Ruby, derived from the Latin Ruber, meaning red. The mineral name of ruby is corundum.
The mineral name of sapphire is corundum, which belongs to corundum group mineral. In fact, gem-grade corundum in nature in addition to red called ruby, the rest of the various colors such as blue, light blue, green, yellow, gray, colorless, etc., are called sapphire, or known as colored sapphire
Emerald is one of the most ancient types of gemstones, and emeralds can be more valuable than diamonds. It was used as jewelry in ancient Egypt.
Spinel is a mineral composed of magnesium aluminum oxide, because it contains magnesium, iron, zinc, manganese and other elements, they can be divided into many kinds, such as aluminum spinel, iron spinel, zinc spinel, manganese spinel, chromium spinel and so on.
Golden emerald, also known as golden green jade. The chemical composition is BeAl2O4, the crystal belongs to the orthorhombic (orthorhombic) crystal system oxide mineral. It is ranked as a valuable gem and has four variants: cat's eye, alexandrite, alexandrite cat's eye and chrysobelic crystal.
A gemstone is a stone or mineral that, when pondered and polished, can meet the requirements of a jewel. The color is beautiful, high hardness, in the atmosphere and the role of chemicals can not change the precious ore. Can be used as instrument bearings, abrasives, decorations, etc.
Semi-precious stones, one of the types of gemstones, there are many varieties of semi-precious stones. The main semi-precious stone varieties are: tourmaline, crystal, lapis lazureite, topaz (topaz), aquamarine, garnet, olivine, tiger's stone (wood stone), brachite (moonstone), starstone, obsidian, malachite, etc
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