A complete collection of the names of all kinds of precious stones.
1, rhombus
It is a mineral composed of carbon, and the colorless and bluish mineral is called "water-fire drill", which has the highest value. Pink, blue, green and gold are rare and precious. The Mohs hardness of diamond crystals in kimberlite is 10.
2. Ruby
It is a kind of corundum, and its main component is alumina. Ruby is hard, only lower than diamond. Pigeon blood red is the best, followed by pomegranate red, rose red and other Mohs hardness 9.
3.sapphire
It is the general name of corundum gems of other colors except ruby. Bright sky blue is the best, followed by indigo and light blue, and Mohs hardness is 9.
4. Emerald
Beryl is an beryl-aluminosilicate mineral. The beryl family is mainly famous for emeralds, followed by aquamarine. Gold beryl and cesium beryl are also attractive. High quality emeralds are produced in Colombia. The Mohs hardness is 7.5.
5. Golden Emerald
Emerald crystal Opal, also known as emerald, is a metamorphic rock with green yellow, honey yellow, yellow brown and other colors, with deep honey yellow as the top grade, produced in Sri Lanka. It is also a precious gem with a hardness of 8.5.
6.aquamarine
The minerals belonging to beryl belong to silicate crystals, and the value with cat's eye effect doubles. The Mohs hardness is 7.5.