CIBJO releases Gemmological Special Report: considers process of separating measurable facts from opinion; See Gemological Articles below.
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 Post subject: Nature or synthetic?
PostPosted: Sun Nov 03, 2013 11:29 pm 
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Nature or synthetic?

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 Post subject: Re: Nature or synthetic?
PostPosted: Sun Nov 03, 2013 11:44 pm 
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What gemstones are we looking at here?

Second one is ruby / pink sapphire?


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 Post subject: Re: Nature or synthetic?
PostPosted: Sun Nov 03, 2013 11:51 pm 
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Hi there! The first is a blue sapphire and the second is a ruby.


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 Post subject: Re: Nature or synthetic?
PostPosted: Mon Nov 04, 2013 2:36 am 
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I will say that, from the photos, we can definitely tell you that they are, without a doubt, either natural or synthetic. They may also be either treated or untreated.
(seriously, though, a single low-res photo alone is generally not enough to tell. More data are required. I'd recommend that you take a look through previous threads and spend a bit of time looking for distinctive features of synthetic sapphire and ruby to find out what sort additional information is needed).

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 Post subject: Re: Nature or synthetic?
PostPosted: Mon Nov 04, 2013 11:42 am 
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Hi, no color banding nor curved striae are observe in the stones, I am just not very sure with the gust of bubbles on the blue sapphires, and under immersion, it reflect as patches of colors; it does look like color diffused internally due to heat treatment. For the ruby, it carries the features of ruby from Mong Hsu, wispy veils of fingerprints with irregular matter that suggest liquid and negative crystals, further there are also some black spots near the cutelet.


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 Post subject: Re: Nature or synthetic?
PostPosted: Wed Nov 06, 2013 10:01 am 
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May I suggest you supply pictures that are in focus as well as a bit higher resolution. If not possible, just take the stones to a competent gemmologist.

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 Post subject: Re: Nature or synthetic?
PostPosted: Fri Dec 13, 2013 8:29 pm 
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The pictures are not good enough to tell.


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