Post subject: Laboratory Identifying Old-Cuts? Gubelin?
Posted: Tue Feb 19, 2008 11:36 am
Valued Contributor
Joined: Wed Feb 13, 2008 6:01 am Posts: 181 Location: T-A
I just came back from a buying trip and came across a Diamond dated
(in my opinion) to around the 17th. Century...
I apparently bought the stone from an Antique merchant who purchased a whole estate from a grand child of someone who originally purchased it from a Sultan from the Ottoman Empire...
I am trying to verify this story...
Anyone know where I can get a Grading report which can identify such an old cut? Gubelin..., maybe?
Joined: Sun Oct 16, 2005 12:22 pm Posts: 21602 Location: San Francisco
Is the diamond loose?
I would think that such a provinence would be very hard to verify, especially because India is currently cutting so many diamonds that mimic the styles of primitive cuts.
Joined: Wed Feb 13, 2008 6:01 am Posts: 181 Location: T-A
Yes the Diamond is loose..., BUT..., it has distinct characteristics like very old polish marks and "wear and tear" that is almost impossible to copy these days...
That's why I am looking for a Lab. which have the knowledge and literature to confirm the cut...
Barbra Voltaire wrote:
Is the diamond loose? I would think that such a provinence would be very hard to verify, especially because India is currently cutting so many diamonds that mimic the styles of primitive cuts.
I just came back from a buying trip and came across a Diamond dated (in my opinion) to around the 17th. Century...
I apparently bought the stone from an Antique merchant who purchased a whole estate from a grand child of someone who originally purchased it from a Sultan from the Ottoman Empire...
I am trying to verify this story...
Anyone know where I can get a Grading report which can identify such an old cut? Gubelin..., maybe?
Any suggestions welcomed
Dear Diagem,
The Gubelin Gem Lab is indeed testing all types of diamonds, including old
and historic ones.
For more information I would like to advise you to contact directly the lab:
http://www.gubelinlab.com/contactus.asp
The views expressed here are V. Pardieu’s opinions and do not necessarily reflect those of GIA Laboratory Bangkok (http://www.giathai.net)where he is an employee since Dec 2008.
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