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Colorado Prospector - Gem and mineral prospecting and mining forums _ Gem and Mineral Specimen Finds or Processes _ Need help identifying....

Posted by: Arrow Jun 28 2017, 11:09 PM

I have a bunch of rocks and need help identifying..pretty sure this is opal but not sure what all the honey color is


 

Posted by: MikeS Jun 29 2017, 05:13 PM

Hello Arrow, welcome to the forums! smileywaving.gif

There is not much I can tell from the picture but there are some home tests that can help confirm if it is opal or help identify it if it's something else.

Scratch Tests Opal hardness Mohs Scale= 5.5 to 6
Streak Tests Opal streak= white
Specific Gravity Test Opal Specific gravity= 2 to 2.25

These tests can help with your other rocks also. thumbsupsmileyanim.gif

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