[Rockhounds] Thai rubies

Fri Apr 14 18:54:41 PDT 2017

I'll try it.  It's more than an impregnation -- it's a thick coating.

☺

On Fri, Apr 14, 2017 at 7:44 PM, Michael Schmidt <dm.schmidt at shaw.ca> wrote:

> chances are you don't.  but you can try ultrasonic cleaning.  it's not a
> coating- it's an impregnation.  it clarifies the corundum, so if you do get
> it off, the quality of the material (physical appearance) will go into the
> toilet
>
> -----Original Message----- From: John Scully
> Sent: Friday, April 14, 2017 6:12 PM
> To: Rockhounds at drizzle.com: A mailing list for rock and gem collectors
> Subject: Re: [Rockhounds] Thai rubies
>
> please answer my original question -- how do I get it off!!
>
> 🤐
>
> On Apr 14, 2017 8:02 PM, "Michael Schmidt" <dm.schmidt at shaw.ca> wrote:
>
> The treat is called glass filling.  It has been around since about 2008 or
>> 2009, and will turn a ruby worth $5.00 p/ct into something that looks like
>> it's worth $5000 p/ct.
>>
>> Back in 2010 we were buying them in Tucson from dealers for (gasp) $25-45
>> p/ct.  Back home, we got multiple appraisals for them in the $6000-11,000
>> p/ct range.
>>
>> That same material today can be bought for $10 p/ct.
>>
>> Michael
>>
>> -----Original Message----- From: Kreigh Tomaszewski
>> Sent: Friday, April 14, 2017 4:58 PM
>> To: Rockhounds at drizzle.com: A mailing list for rock and gem collectors
>> Subject: Re: [Rockhounds] Thai rubies
>>
>> There is a possibility the coating is glass
>>
>> https://books.google.com/books?id=5BsyBwAAQBAJ&pg=PA99&lpg=
>> PA99&dq=what+is+the+coating+on+thai+rubies&source=bl&ots=
>> SFzyR3l_SP&sig=gjQdmUEI4zYSzzKiWqvHi2ZVr6o&hl=en&sa=X&ved=0a
>> hUKEwitlv7VkqXTAhUM94MKHTnhC-sQ6AEIbjAJ#v=onepage&q=what%20
>> is%20the%20coating%20on%20thai%20rubies&f=false
>>
>> On Fri, Apr 14, 2017 at 7:43 PM, Tim Fisher <nospam at orerockon.com> wrote:
>>
>> I asked a Thai gemstone dealer friend, I'll let you know what he says.
>>
>>>
>>> Tim Fisher
>>> Orerockon.com
>>>
>>>
>>> -----Original Message-----
>>> From: Rockhounds [mailto:rockhounds-bounces at rockhounds.drizzle.com] On
>>> Behalf Of Bart Heymans
>>> Sent: Friday, April 14, 2017 4:07 PM
>>> To: rockhounds at rockhounds.drizzle.com
>>> Subject: Re: [Rockhounds] Rockhounds Digest, Vol 4, Issue 6
>>>
>>> Hi,
>>>
>>> Could the coating be shellac?
>>>
>>> Regards,
>>>
>>> Bart Heymans
>>> Op do 13 apr. 2017 om 21:00 schreef <
>>> rockhounds-request at rockhounds.drizzle.com>
>>>
>>> > Send Rockhounds mailing list submissions to
>>> >         rockhounds at rockhounds.drizzle.com
>>> >
>>> > To subscribe or unsubscribe via the World Wide Web, visit
>>> >
>>> > http://rockhounds.drizzle.com/mailman/listinfo/rockhounds_rockhounds.d
>>> > rizzle.com
>>> >
>>> > or, via email, send a message with subject or body 'help' to
>>> >         rockhounds-request at rockhounds.drizzle.com
>>> >
>>> > You can reach the person managing the list at
>>> >         rockhounds-owner at rockhounds.drizzle.com
>>> >
>>> > When replying, please edit your Subject line so it is more specific
>>> > than "Re: Contents of Rockhounds digest..."
>>> >
>>> >
>>> > Today's Topics:
>>> >
>>> >    1. Cleaning Thai Rubies (John Scully)
>>> >
>>> >
>>> > ----------------------------------------------------------------------
>>> >
>>> > 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
>>> > Message-ID:
>>> >         <CAB2BCLZ0p2G8izxG9Ga=GRwr_JqMrGhAMPrUEhikRD50LPN0=
>>> > w at mail.gmail.com>
>>> > Content-Type: text/plain; charset=UTF-8
>>> >
>>> > 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
>>> > ?
>>> >
>>> >
>>> > ------------------------------
>>> >
>>> > Subject: Digest Footer
>>> >
>>> > _______________________________________________
>>> > Rockhounds mailing list
>>> > Subscription Services:
>>> > http://rockhounds.drizzle.com/mailman/listinfo/rockhounds_rockhounds.d
>>> > rizzle.com
>>> > List Usage Policy:
>>> > http://Tomaszewski.net/Kreigh/Rockhounds/Rockhounds.shtml
>>> >
>>> >
>>> > ------------------------------
>>> >
>>> > End of Rockhounds Digest, Vol 4, Issue 6
>>> > ****************************************
>>> >
>>> --
>>> Verzonden via Gmail Mobile
>>> _______________________________________________
>>> Rockhounds mailing list
>>> Subscription Services:
>>> http://rockhounds.drizzle.com/mailman/listinfo/rockhounds_
>>> rockhounds.drizzle
>>> .com
>>> List Usage Policy: http://Tomaszewski.net/Kreigh/
>>> Rockhounds/Rockhounds.shtml
>>>
>>>
>>> _______________________________________________
>>> Rockhounds mailing list
>>> Subscription Services:  http://rockhounds.drizzle.com/
>>> mailman/listinfo/rockhounds_rockhounds.drizzle.com
>>> List Usage Policy: http://Tomaszewski.net/Kreigh/
>>> Rockhounds/Rockhounds.shtml
>>>
>>> _______________________________________________
>>>
>> Rockhounds mailing list
>> Subscription Services: http://rockhounds.drizzle.com/
>> mailman/listinfo/rockhounds_rockhounds.drizzle.com
>> List Usage Policy: http://Tomaszewski.net/Kreigh/
>> Rockhounds/Rockhounds.shtml
>>
>> ---
>> This email has been checked for viruses by Avast antivirus software.
>> https://www.avast.com/antivirus
>>
>>
>> _______________________________________________
>> Rockhounds mailing list
>> Subscription Services:  http://rockhounds.drizzle.com/
>> mailman/listinfo/rockhounds_rockhounds.drizzle.com
>> List Usage Policy: http://Tomaszewski.net/Kreigh/
>> Rockhounds/Rockhounds.shtml
>>
>> _______________________________________________
> Rockhounds mailing list
> Subscription Services: http://rockhounds.drizzle.com/
> mailman/listinfo/rockhounds_rockhounds.drizzle.com
> List Usage Policy: http://Tomaszewski.net/Kreigh/
> Rockhounds/Rockhounds.shtml
>
> ---
> This email has been checked for viruses by Avast antivirus software.
> https://www.avast.com/antivirus
>
>
> _______________________________________________
> Rockhounds mailing list
> Subscription Services:  http://rockhounds.drizzle.com/
> mailman/listinfo/rockhounds_rockhounds.drizzle.com
> List Usage Policy: http://Tomaszewski.net/Kreigh/
> Rockhounds/Rockhounds.shtml
>