New Mineral Named After GIA’s John Koivula
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 Post subject: James Shigley on Synthetic Diamonds
PostPosted: Sat May 19, 2018 12:22 pm 
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Characteristics of HTHP Synthetic Diamonds Poster Download.pdf
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 Post subject: Re: James Shigley on Synthetic Diamonds
PostPosted: Tue May 22, 2018 3:37 am 
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really nice work again from the gia :D

thanks you for sharing


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 Post subject: Re: James Shigley on Synthetic Diamonds
PostPosted: Tue May 22, 2018 5:08 pm 
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We picked up a small red HPHT diamond this year at Tucson, and it shows a very nice cross even in intense LED light (much better in UV of course). It is a cool feature for sure.

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 Post subject: Re: James Shigley on Synthetic Diamonds
PostPosted: Wed May 23, 2018 11:25 am 
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cough cough, picture?


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 Post subject: Re: James Shigley on Synthetic Diamonds
PostPosted: Fri Jun 01, 2018 6:59 pm 
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Informative presentation.

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