Classification of gems
Modern gemology is based on the use of gemstones in three categories: colored gemstones, diamonds and jade. White Running Shoes,Sport Shoes,Black Sports Shoes,Stability Running Shoes Huaying Shoes Co. Ltd , https://www.a3shoes.com
diamond:
Transparent and beautiful diamonds are precious stones. Because of their high hardness, brightness and fire color (strong dispersion), they are unparalleled in gemstones, making them the most popular gemstones, including transparent color or blue. The color is the highest value. The main criteria for evaluating diamonds are weight, color, cleanliness and cut.
colorful gems:
Refers to those colored gems, such as rubies, sapphires, emeralds, aquamarine, cat gems, chrome, citrine, opal, tourmaline, spinel, garnet, zircon, olive, emerald, emerald green Gemstones, quartz cat eyes, turquoise, lapis lazuli, pearls, etc.
jade:
This category is specifically for Chinese, referring to polycrystalline aggregate minerals such as jade and white jade. Diamonds and colored stones are single crystals.
Jade is divided into colors: white jade, jasper, sapphire, ink jade, topaz, huangyu jade, green jade, Jingbai jade and so on. Geographically, there are: Xinjiang jade, Henan jade, Xiuyan jade (also known as Xinshan jade), Australian jade, Dushan jade, southern jade, Canadian jade, etc., and Xinjiang Hetian jade is a famous specialty of China.
agate:
From the color: white, gray, red, blue, green, yellow, goat liver, gallbladder, chicken blood, black agate and so on. From the pattern, there are: grass, algae, silk, onyx and so on. It is produced in Northeast China, Inner Mongolia, Yunnan, and Guangxi. And there is a water-bearing agate, called water agate.
stone:
Shoushan stone, turquoise, lapis lazuli, hibiscus stone, wood stone (also known as tiger skin stone), peach stone (also known as Beijing powder green) malachite, blue stone, sheep liver stone, tiger eye stone, Dongling stone, etc. Among them, turquoise is a famous product in the area of ​​Fuyang, Hubei, China.
crystal:
White crystal, amethyst, citrine, amethyst, red crystal, pink crystal, blue crystal, titanium crystal, ink crystal, ghost crystal, tea crystal (also known as smoky quartz), soft crystal, twin crystal, hair crystal. China's north and south are produced everywhere, including Donghai County, Jiangsu Province, which produces natural crystals.
Jade:
It has purple, red, gray, yellow, white and other colors, but it is expensive with green. It is a famous specialty of our neighboring Myanmar.
coral:
Divided into red and white, it is a seabed coelenterate fossil, and the quality produced in Taiwan Province of China is very good.
Beads:
Pearl (sea pearl, freshwater pearl), cultured pearl (seawater cultured pearl, freshwater cultured pearl).