New Mineral Named After GIA’s John Koivula
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 Post subject: Regarding the (2015) IIDGR DiamondView (w/ filters)
PostPosted: Sat Aug 17, 2019 10:54 am 
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Pardon if this is a novice question, but might anyone know if the IIDGR Diamond View is currently the only machine used by labs & gemologists for separating natural type II diamonds from type II lab-grown diamonds? (*Assuming that a stone-in-question has already undergone testing by machines such as the GIA id100 or the HRD J-Screen with a refer result given, and all imitations like CZ and moissanite are already ruled out)

Would testing using the IIDGR Diamond View as it is now (the updated version w/ filters) be the only (or) best next step to take in the process, if one wanted to take the identification further? Is there a newer machine that could replace it soon via the same or similar technology / methods? Thanks very much in advance for any insights on this, just curious mostly. :)


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 Post subject: Re: Regarding the (2015) IIDGR DiamondView (w/ filters)
PostPosted: Sat Aug 17, 2019 1:21 pm 
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I'm sorry.
Where did you get the information that this instrument is the "only" one used by labs and gemologists?
I don't think that is true.


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 Post subject: Re: Regarding the (2015) IIDGR DiamondView (w/ filters)
PostPosted: Sun Aug 18, 2019 3:49 am 
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Apologies, I was just told by a colleague that it was the only "next step" instrument that labs use for separating type 2 diamonds after using the GIA id100 (or HRD J-Screen). So.. I was informed that these two instruments refer a small amount of natural diamonds- around 2%, and these would then be checked using the DiamondView.

I wasn't sure about this, which is exactly why I posted the question on this thread, looking to ask if there were any other instruments (newer or otherwise) capable of further identifying this 2%. :)


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 Post subject: Re: Regarding the (2015) IIDGR DiamondView (w/ filters)
PostPosted: Sat Sep 14, 2019 3:46 am 
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when a type II completely lacks N3 and other features which can allow its identification as a natural diamond, the ultimate weapon is fluorescence imaging under Deep UV. the most common unit for this purpose is the diamondview.
as a sidenote i would stress that many natural IIa do contain enough N3 not showing up in absorption UV-VisNIR but that can be identified by appropriate instrumentation, only the extremely pure ones really need to undergo the growth structure observation in deep UV.

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