Nephrite jade that’s specific gravity is 2.57g/cm3

Red-Coat

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Dec 23, 2019
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Welcome to Tnet.

This is something you could easily look up for yourself via Google. At 2.57 g/cm3 (equivalent to Specific Gravity) it doesn't fall within the range quoted by the International Gem Society: 2.90-3.02 and usually 2.95.

It doesn't correspond to the other form of "jade" either (jadeite), which would be a little higher at around 3.30-3.38

Why not post some nice sharp close-up pictures, although that won't necessarily help in identification?

I'm sure the Mods will move your post to a more appropriate area than the "Help" section for technical problems with the forums.
 

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BillKao

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Feb 25, 2024
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Welcome to Tnet.

This is something you could easily look up for yourself via Google. At 2.57 g/cm3 (equivalent to Specific Gravity) it doesn't fall within the range quoted by the International Gem Society: 2.90-3.02 and usually 2.95.

It doesn't correspond to the other form of "jade" either (jadeite), which would be a little higher at around 3.30-3.38

Why not post some nice sharp close-up pictures, although that won't necessarily help in identification?

I'm sure the Mods will move your post to a more appropriate area than the "Help" section for technical problems with the forums.
Thank you so much!
 

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galenrog

Bronze Member
Feb 19, 2006
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Quality serpentine can closely resemble both Jadite and Nephrite. In comparison, it has both a lower specific gravity and is softer.
 

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