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 Post subject: Re: ?? Are These Faux Chrysoberyl Cat's Eyes or Something El
PostPosted: Fri Nov 12, 2010 8:16 pm 
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Yes they do change, so thanks for your tip and smile!


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 Post subject: Re: ?? Are These Faux Chrysoberyl Cat's Eyes or Something El
PostPosted: Wed Nov 17, 2010 1:52 pm 
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I hope you don't take this question too personal, but how much did you pay for the piece? If these are real transparent Cat's Eye Alex, the price would be in the stratosphere! I'm not saying that people don't get lucky & find a real treasure for nothing, but it would be like winning millions in a lottery, the odds are a billion to one.

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 Post subject: Re: ?? Are These Faux Chrysoberyl Cat's Eyes or Something El
PostPosted: Sun Nov 21, 2010 5:32 pm 
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sadly, but not surprisingly, it turns out that these are organic matter, likely black mother of pearl. Thanks to everyone for their help and interest!


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 Post subject: Re: ?? Are These Faux Chrysoberyl Cat's Eyes or Something El
PostPosted: Sun Nov 21, 2010 6:41 pm 
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Just proves you can't tell anything from a photo.....or even from subsequent verbal "clarification".

Frankly, without additional information, this "organic" identification is as meaningless as the one made by the "jeweler" who determined they were "antique" chrysoberyl. :roll:

How was this latest identification made?
Based on what? Hardness? Reaction to hydrochloric acid? Refractive Index?

What sort of shell?
What is causing the chatoyancy?


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 Post subject: Re: ?? Are These Faux Chrysoberyl Cat's Eyes or Something El
PostPosted: Sun Nov 21, 2010 11:59 pm 
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I'm with Barb - this doesn't hold much water yet either. That is certainly not anything that I would have thought at all. I would have said thermoplastic like the old costume pieces by Coro, Weiss and others before shell.

Here is an example of a Weiss thermoplastic piece - I 'borrowed' this from broadwaterrosejewels so I thank them! Check out the link below and look at the beautiful pieces there. All costume tho'...

Image

For those that can't view the image, here is the direct link:
http://www.broadwaterrosejewels.com/Weiss/6150.jpg

Here is their main webpage: http://www.broadwaterrosejewels.com/index.html

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 Post subject: Re: ?? Are These Faux Chrysoberyl Cat's Eyes or Something El
PostPosted: Tue Mar 12, 2019 6:24 am 
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adamas ashutoosh wrote:
it could be feldspar take spot method RI then conclude
it appears some treatment had done on it

Can you elobrate more about spot method please .


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 Post subject: Re: ?? Are These Faux Chrysoberyl Cat's Eyes or Something El
PostPosted: Wed Mar 13, 2019 6:44 pm 
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Hey LorenWill, here is a link to a google book that explains the spot method

https://books.google.com/books?id=qDuSy ... AXoECAsQAQ

Jim


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