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I found this in Victorville, CA in a location known for finding black jade. It's a bluish color and a little translucent. I found some Amethyst on a hike a few weeks ago and that sparked a curiously in me and I'm wanting to learn.

enter image description here

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  • $\begingroup$ Hi Donna, welcome to Earthscience. Your question needs some improvement though. Please read this and update your question accordingly. $\endgroup$ – Jan Doggen Apr 28 '17 at 6:23
  • $\begingroup$ Also, you talk about more than one sample, but we only see one. If you indeed have more (and different) samples, use a new question for each one. $\endgroup$ – Jan Doggen Apr 28 '17 at 6:24
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Your rock most likely contains common opal or chalcedony (cryptocrystalline variety of quartz). You will be able to scratch opal with a sturdy steel knife blade but not chalcedony.

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  • $\begingroup$ I'm guessing opal $\endgroup$ – Gimelist May 2 '17 at 20:43

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