HILL JADE STONE COMPANY

http://indotrade.co/hilljadestone

Hill jade stone company offering you the best decorative stones.
Our jade material is unique and historic in China .
material is 100% self-own, competing no others.
With high hardness , high density, richness color , brilliant shining and 100% acid/ alkali-proof.
We offer you this material in floors , bathrooms , kitchens, mosaic , cut to size works.

Physical Properties of Onyx
Onyx is a form of chalcedony, part of the quartz group. Like the other stones in the chalcedony family, onyx has a smooth, waxy luster. Onyx can be found in a wide range of colors, often layered.

Specific Gravity : 2.65-3.35
Refractive Index : 1.55 - 1.54
Hardness : 7.1 - 7.5 on Moh' s scale
Abrasion resistance: 2.2
Refractoriness: 1730-1770 degree

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