1, black opal
Black opal is opaque, but its color is very bright, so it is extremely rare and expensive.
2. Silicone-boron-potassium-sodium silicate
Sodium silicoborate was discovered in Canada in the middle of last century. Because it is so rare, this kind of gem is extremely expensive.
3. Opal
The price of opal is very high. Opal looks very attractive, showing a strong sense of luster and dazzling colors.
4.tanzanite
Tanzanite, also known as zoisite, is more common in Tanzania. This kind of gem was originally used as an ornament, but now it is very popular in the jewelry market.
5, magnesium taffeta stone
The color of magnesium taffeta is natural, and it belongs to a kind of colorful gem with high density and hardness, usually in a conical or granular aggregate.
6. Alexander changed stone
Emerald is "one of the top ten gems in the world". It has many varieties, different colors and textures. It has a strong luster and is particularly beautiful.
7. Tamil Ruby
Tamil ruby is a giant red spinel weighing 352.5 carats. Queen Elizabeth II once wore it here and attended many important occasions.
8.jadeite
Jade is what we call jade, and the prices of different colors and textures are also very different. Some people differ by more than 10 times only by distinguishing colors.
9. Blue cone mines
This kind of gem has a clean surface and a high refractive index. Mainly produced in California, USA, but the number is extremely rare.
10, andalusite
Beryl is a branch of green columnar gem, which has several series. In order to avoid confusion and popular classification, the value of this gem is very precious.