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 Post subject: Fingerprint inclusions
PostPosted: Fri Mar 17, 2006 10:26 am 
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Joined: Sat Mar 11, 2006 11:47 pm
Posts: 147
Location: Aiken SC
Hi gang,

I ran into a dark brown diamond Old European cut that had fingerprint inclusions. It also had a frosted girdle. I suspected it was either a synthetic or has been treated with HPHT to improve the color. I talked to the customer she said the stone came from Europe over sixty years ago. I contacted GIA and they said it could have been treated.

My question is, do natural diamonds have fingerprint inclusions? I know in some of the better synthetics today that fingerprints are a red flag to suspect a synthetic.

Help! :idea:

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Michael Ph.D. C.G.A.

Aiken, SC

"The fear of God is the beginning of Wisdom"
King Solomon


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PostPosted: Fri Mar 17, 2006 10:34 am 
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Joined: Tue Nov 29, 2005 2:02 pm
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gem doc,

There is an article in the latest GIA Insider concerning this. See below.

http://www.gia.edu/newsroom/issue/2798/ ... ails.cfm#4


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