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what kind of rock or jade is this?

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asked Aug 9, 2015 by tl5029tommy (140 points)

1 Answer

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Give us some info like where found, how hard is the rock, can you scratch it with your fingernail, a pocketknife, a rock like quartz. It looks like jadeite. I'll check and get back to you. Jade is soft enough for intricate carving
answered Aug 10, 2015 by Weasel (33,930 points)
There are three types of rock with jade like colors and properties...nephrite, jadeite and jade
I scrath is with knife got no scrath.and found in river.i think hardness around 7 to 7.5
A slight correction... two types of jade: Nephrite and Jadeite. Jade is the universal term for both.
If found in the US, and is a jade it most likely nephrite.
Another tool to help would be to check mindat.org for both types of jade. A map will show where jade has been reported world wide. Of course there may be unreported finds.
For example, if you find a white stone on the Chetco river in Oregon there is a small chance it is mutton fat nephrite. A source of jade has been identified on USFS lands along the Chetco river, with many finds of white to dark green nephrite. It is one of the very few places listed in the book, "Gem Trails of Oregon" to find jade. If you could find similar about the area where you found your specimen it would be a big help.

Unfortunately with jade, you are pretty much stuck with taking it to an expert for testing. Reflexively, I'd say "not jade" because of the coloring (not seen images of similar) but jade has a large range.

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