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Can anyone tell me what type of stone this is?

0 votes
A friend gave this to me a little while back they didnt know what it was either. Where you can see the broken area, the inside looks almost to be black when you hold it in the sunlight. Also as you can see its brittle it used to be more, pieces keep coming off even as it sits.

asked Mar 27, 2018 by Ccook0441 (120 points)

1 Answer

0 votes
It looks like opal, even black opal. Opals tend to be brittle. Take it to a rock shop. They can confirm it.
answered Apr 18, 2018 by Weasel (58,940 points)
Thank you i was also curious if there are any aces that might  willing to buy it or appraise it for free any suggestions?
Yes any rock shop will confirm it and if he does not have a lapidary working with him he should be able to refer you to one nearby. A lapidary will have a saw able to cut through stones, should know the best way to cut the stone and be able to estimate how much stone will be left after the cutting. Most will do it for free and may make an offer. Be aware the lapidary and jewelers know the value and will only pay wholesale prices. That is as good as you will do unless you try to auction it. I would do it at several different shops to get a more honest appraisal value.
Stones are appraised by weight, purity, lack of inclusions, just too much for a website. Google gem values and you will find daily values per karat but grades and usable karat weight and gem quality will vary