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On the handwork market I've found piece like this

strange sparkling stone

Merchant (who was reseller) didn't know its name. Have you any idea what is that?

EDIT:

I think it was about 5 on Moch's scale. It was black with sparkling inclusions. It was changing its colours. I cannot tell anything about its original size, but the one that I found was a ball of ~2-2.5 cm In diameter.

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  • $\begingroup$ We need better pics and more info. meta.earthscience.stackexchange.com/questions/124/… $\endgroup$ – Jan Doggen Feb 19 '16 at 14:39
  • $\begingroup$ Ufnfortunately it is impossible for me to get more info than this. $\endgroup$ – Hauleth Feb 19 '16 at 14:48
  • $\begingroup$ I can't see it very well; however, my guess would be that it maybe jasper $\endgroup$ – L.B. Feb 20 '16 at 20:33
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Not enough detail to respond. Could just be tumbled fluorite or fused coloured glass. Hardness of 'about 5' probably isn't high enough to be an interesting gemstone.

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  • $\begingroup$ Im going with Fire Opal $\endgroup$ – user5434678 Mar 7 '16 at 11:05

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