Known as the "Chinese sapphire" of the hetero ore, really can do precious stones are very small, because it was born thin, generally 1-2 millimeter small slices, thick and translucent color sky blue is more rare.
This unusual polar mine pendant is more transparent, has the natural pit crack, but does not pay attention to not to see very much, the perfectionist carefully takes. 

We in the gem chooses the material carefully

Gem grinding studio we

We collect gem material in the mine, the first hand source.