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Could this be Opal?
  
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Andreas




Joined: 14 Jun 2019
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PostPosted: Aug 13, 2019 15:06    Post subject: Could this be Opal?  

Hello mineral lovers, i hope you can help me with identifying this specimen!

I found this stone/mineral on the beach. At first glance it appeared to be a regular rock, but I found that it had some bluish shine, which became more clear when I polished it a little.
The blue colors change with the angle I look at them. Could this be an opal? or is it just something else?

It is not too hard to polish just using sandpaper.

I hope you can help me, and thank you if you try.

Best,
Andreas



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kushmeja




Joined: 28 Jul 2014
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PostPosted: Aug 13, 2019 15:10    Post subject: Re: Could this be Opal?  

Doesn't look at all like opal really. It's probably feldspar with blue shimmer (aka Moonstone).
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Andreas




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PostPosted: Aug 13, 2019 15:18    Post subject: Re: Could this be Opal?  

kushmeja wrote:
Doesn't look at all like opal really. It's probably feldspar with blue shimmer (aka Moonstone).

Thank you kushmeja! I did not know that one, it would make a lot more sense :) I have just never seen these! Hopefully I will learn as long that I live !
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SteveB




Joined: 12 Oct 2015
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PostPosted: Aug 13, 2019 22:38    Post subject: Re: Could this be Opal?  

Larvikite
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