[Rockhounds] Rockhounds Digest, Vol 4, Issue 6

[Bart Heymans]

Hi,

Could the coating be shellac?

Regards,

Bart Heymans
Op do 13 apr. 2017 om 21:00 schreef <
rockhounds-request at rockhounds.drizzle.com>

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>    1. Cleaning Thai Rubies (John Scully)
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> Message: 1
> Date: Wed, 12 Apr 2017 14:03:15 -0600
> From: John Scully <jscully216 at gmail.com>
> To: Rockhounds <rockhounds at lists.drizzle.com>
> Subject: [Rockhounds] Cleaning Thai Rubies
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> Hi,
>
> I just got back from Thailand and, among new treasures, is a bag of bright
> but lesser quality rubies and sapphires.  They are heavily coated with
> something that brings out their color but looks fake -- waxy, shiny.  At
> first I thought it was just some acrylic or shellac, but neither alcohol
> nor varsol touches it.  OI can scratch it with a knife, but that is all.
>
> Any ideas on what it is and how on earth to get rid of it??
>
> Thanks
> John Scully
> ?
>
>
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> End of Rockhounds Digest, Vol 4, Issue 6
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