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The Qinghai kunlun jade has :
The rigidity  6.2--7.5
Proportion  2.7--3.1
Density  2.9
the content of the high-quality rock 93%

Kunlun jade stands for lucky.it is compectived successful as the  medal of the Olympic game in China 2008.It is said that more than 3000 Olympic medal are made of the Qinghai kunlun jade.

Qinghai Nephrite,in particular the price of the white jade has creased facing the downturn of the market in recently years.the top is from 300% to 500%. it has high investment and collection value.