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 Post subject: Surface diffused Synthetic Star Ruby
PostPosted: Mon Sep 12, 2011 1:01 pm 
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Location: PAKISTAN-Peshawar
Hi folks
To day I want to share the pictures of surface diffused synthetic star ruby. This is bought in Hong Kong in the name of natural star ruby.

With best regards

HUK


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 Post subject: Re: Surface diffused Synthetic Star Ruby
PostPosted: Mon Sep 12, 2011 1:03 pm 
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some more pictures


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 Post subject: Re: Surface diffused Synthetic Star Ruby
PostPosted: Mon Sep 12, 2011 4:32 pm 
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Nice images Osman. I do not understand who would buy this as natural... the star gives away its nature immediately even in an image. Big flashing warning sign :)

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 Post subject: Re: Surface diffused Synthetic Star Ruby
PostPosted: Mon Sep 12, 2011 8:09 pm 
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So this is natural ruby with a diffused star? Synthetic? Glass filled? Why is the star so fake looking? Looks pretty good to me...


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 Post subject: Re: Surface diffused Synthetic Star Ruby
PostPosted: Mon Sep 12, 2011 9:09 pm 
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I've cut and seen quite a few star corundums. I've examined diffused natural sapphires and can readily sight-ID them. But I don't see any such obvious clues with this stone. Will someone explain what makes diffusion so apparent in this ruby?

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 Post subject: Re: Surface diffused Synthetic Star Ruby
PostPosted: Tue Sep 13, 2011 4:34 am 
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The star seems to be floating on top of the stone which is a warning sign for me. Should be even easier to see live.

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 Post subject: Re: Surface diffused Synthetic Star Ruby
PostPosted: Tue Sep 13, 2011 8:31 am 
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Dear Conny Forsberg and friends,
Actually this is Flame Fusion synthetic Ruby which is further heated with Cr+Ti (Fe+Ti in case of blue sapphire) to between 1300 degree to 1900 degree centigrade in a oxidizing atmosphere and then cool slowly approx 1-14 days or more. This will allow the formation of stars with abundant titanium.

This ruby is bought in Hong Kong one of our customer in the name of natural star ruby and the dealer tell him that this star ruby origin is Pakistan. But after thoroughly checking in Gems & Gemological Institute of Pakistan (GGIP)-Peshawar laboratory the stone found Surface diffuse synthetic flame fusion star ruby.

For more pictures please visit the following link

http://aggemologist.blogspot.com/2011/0 ... -ruby.html

I will also post more pictures soon

with best regards

HUK

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 Post subject: Re: Surface diffused Synthetic Star Ruby
PostPosted: Tue Sep 13, 2011 11:25 am 
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Conny Forsberg wrote:
The star seems to be floating on top of the stone which is a warning sign for me. Should be even easier to see live.

That's what I look for in diffused natural sapphire but your eyes must be sharper than mine -- the surface effect is not that obvious to me from these images.
Neither is the asterism as perfect as that normally seen in diffused flame fusion corundum which is one of its obvious visual clues. I think the low dome cut broadens the star's "legs" and gives it a more natural appearance. It's good to have a reference visual. Thanks!

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 Post subject: Re: Surface diffused Synthetic Star Ruby
PostPosted: Sun Nov 20, 2011 5:06 pm 
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some more Pictures of surface diffused synthetic star rubies


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synthetic diffused star ruby-1.JPG
synthetic diffused star ruby-1.JPG [ 159.52 KiB | Viewed 2612 times ]

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