Huaan Jade Grey and Black Onyx Slabs
Hua'an Jade also called Dargon Painting of Huaan , major components are quartz ,feldspar, diopside , tremolite , actinolite and etc , which is recrystallized after silicification .
It's origin is sea facies sedimentary rocks (about 248 millions years ago ) , 163 millions years ago it changed to calcareous siliceous metamorphic rock due to volcanic eruption .
It's a kind of stone that doesnât need pre or after protection , and a rare stone inChina , we are the legal and sole supplier for this black and white Hua'an Jade in the world .
It's origin is sea facies sedimentary rocks (about 248 millions years ago ) , 163 millions years ago it changed to calcareous siliceous metamorphic rock due to volcanic eruption .
It's a kind of stone that doesnât need pre or after protection , and a rare stone inChina , we are the legal and sole supplier for this black and white Hua'an Jade in the world .
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