Developing an instrument which would consistently determine the color and clarity of a fashioned diamond might be the difference needed to view diamond grading as science, not a subjective art.
Post subject: Re: JCK: Device to Detect Synthetic Melee
Posted: Mon Dec 10, 2012 6:50 pm
Platinum Member
Joined: Fri Feb 24, 2006 1:20 am Posts: 2756 Location: Southern California, U.S.A.
Barbra Voltaire wrote:
Developing an instrument which would consistently determine the color and clarity of a fashioned diamond might be the difference needed to view diamond grading as science, not a subjective art.
Wow! I've been waiting such a machine to come into use since Dr. Joel Arem announced one was nearly ready to be unveiled. That was at a diamond conference I attended -- in 1981.
Forgive my cynicism but this technology has been forecast for a long time now.
Post subject: Re: JCK: Device to Detect Synthetic Melee
Posted: Mon Dec 10, 2012 6:58 pm
Site Admin
Joined: Sun Oct 16, 2005 12:22 pm Posts: 21602 Location: San Francisco
When I was in Russia, they were using a spectrographic unit at both the University of Moscow and Alrosa to grade color and clarity. Apparently, the unit is less forgiving than the human eye.
Post subject: Re: JCK: Device to Detect Synthetic Melee
Posted: Mon Dec 10, 2012 7:58 pm
Moderator: Lapidary Diamonds
Joined: Mon Aug 20, 2012 11:32 pm Posts: 1747 Location: Florida, United States
ROM wrote:
Wow! I've been waiting such a machine to come into use since Dr. Joel Arem announced one was nearly ready to be unveiled. That was at a diamond conference I attended -- in 1981. Forgive my cynicism but this technology has been forecast for a long time now.
Post subject: Re: JCK: Device to Detect Synthetic Melee
Posted: Mon Dec 10, 2012 8:59 pm
Platinum Member
Joined: Fri Feb 24, 2006 1:20 am Posts: 2756 Location: Southern California, U.S.A.
It wasn't Arem's machine, Thomas. He was talking about technological capability and industry research being done at the time.
In all seriousness Barbra, how did your Gran Colorimeter work out? I could only find your initial 2006 posts about a "lemon" from Kassoy. Did the replacement work any better?
Post subject: Re: JCK: Device to Detect Synthetic Melee
Posted: Tue Dec 11, 2012 12:48 am
Site Admin
Joined: Sun Oct 16, 2005 12:22 pm Posts: 21602 Location: San Francisco
I think it was Gene (G4Lab) who had the worst experience with one.
I lost interest with it after a few months. I still have it; never use it. It was temperamental needing frequent recalibration.
I thought that is was somewhat accurate, once calibrated, giving color results within one grade in either direction when I checked it against GIA Human Graded Diamonds.
Users browsing this forum: No registered users and 18 guests
You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot post attachments in this forum