1, emerald
Emerald, known as the king of emeralds, is as rare as the bright red Ulamnu, and is recognized as one of the four precious gems in the international jewelry industry. Because of its unique green color, unique charm and magical legend, it is deeply favored by westerners.
2. Ruby
Ruby belongs to corundum group minerals and has a tripartite crystal system. It is red because it contains chromium. The higher the content, the brighter the color. Blood-red rubies are most cherished by people, commonly known as "pigeon blood red". Ruby, emerald, sapphire and tourmaline all belong to colored gems. Ruby is hard, only lower than diamond.
3.sapphire
Sapphire is characterized by uneven color, and parallel hexagonal columns are arranged with flat bands and growth lines of different shades. Poly-sheet has the development of bimorph, and the bimorph pattern of louver is common. Cleavage often cleaves along double crystal planes. Dichroism is strong. In addition to the above characteristics, sapphires all over the world have their own characteristics due to different places of origin.
Classification of colored gems
There are many kinds of colored gems, which is a treasure given to us by nature. Colored gems, as we usually say, is a natural colored gems. Some people divide colored gems into organic colored gems and inorganic colored gems. Pearl, amber and coral all belong to organic colored gems, while diamonds, rubies and sapphires all belong to inorganic colored gems. People who wear these two kinds of colored gems jewelry are good for their physical and mental health.
Modern people pursue individuality, fashion, classics and so on, and colored gems also has personalized classification. For example, fashion gems include amethyst, white opal, chalcedony, olivine, garnet, epidote, topaz, turquoise, lapis lazuli and so on. Classic gems include rubies, sapphires, diamonds, emeralds and emeralds. Gems include diamonds, moonstones, rubies and sapphires. Personality gems include tanzanite, watermelon tourmaline, red stone, agate and so on.