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Old 06-07-2019, 08:17 AM
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pryan67 pryan67 is online now
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Default Cleaning shell encrusted opal earring?

Found this on the beach this morning. It's shell encrusted now.

Any ideas, or just leave it as is?
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Old 06-07-2019, 09:24 AM
waltr waltr is offline
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If shell then it is a carbonate compound which should dissolve is a weak acid.
Maybe that CLR stuff will work.
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Old 06-10-2019, 12:22 PM
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Originally Posted by waltr View post
If shell then it is a carbonate compound which should dissolve is a weak acid.
Maybe that CLR stuff will work.
I thought about that...but I'd worry about the opal...I'd think that the CLR would dissolve that as well.

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Old 06-10-2019, 01:56 PM
waltr waltr is offline
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Possible.
Here is link to Opal composition, which is silica:
https://en.wikipedia.org/wiki/Opal

And here is link to CLR MSDS which lists the active ingredients:
https://clrbrands.com/Jelmar/media/s...DS-1-16-19.pdf

A little additional research should give you the answer.
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