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 Post subject: Creating star effect on natural sapphire cabochons
PostPosted: Sun Nov 28, 2021 12:36 am 
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Has anyone heard of thai burners creating the star effect on natural sapphire cabs by sprinkling synthetic silk on the sapphire while burning, I heard this happens there.


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 Post subject: Re: Creating star effect on natural sapphire cabochons
PostPosted: Sun Nov 28, 2021 1:51 pm 
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Yes, it is done through a diffusion process. It is quite common these days.


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 Post subject: Re: Creating star effect on natural sapphire cabochons
PostPosted: Sun Nov 28, 2021 8:56 pm 
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just another thing to watch out for then.


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 Post subject: Re: Creating star effect on natural sapphire cabochons
PostPosted: Mon Nov 29, 2021 12:01 am 
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US troops brought a lot of this stuff back from Afghanistan. Peculiar grayish-blue color, but if you look at the back toward a bright light you can see color zoning, blue and green zones of the natural cab that doesn’t show face up.

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 Post subject: Re: Creating star effect on natural sapphire cabochons
PostPosted: Mon Nov 29, 2021 10:43 am 
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Fortunately they are pretty easy to spot, unless there has been another advancement in the process.

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