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It is a regulation not a law.Date: 5/7/2008 4:45:13 AM
Author: Garry H (Cut Nut)
Thanks Storm
BTW - that is a case about the wholesale - so a legal precedent, but there is no actual law is there?
Date: 5/8/2008 1:00:34 PM
Author: kcgunesq
It is unfair or deceptive to use the term ''blue white'' or any representation of similar meaning to describe any diamond that under normal, north daylight or its equivalent shows any color or any trace of any color other than blue or bluish.
But as a colorless diamond with strong blue flouro would not appear to have any color or trace of color other than blue, I don''t see how the term is prohibted when used to describe a colorless diamond having flouro sufficient to change its color to some shade of blue in natural mid-day sunlight.
You may be correct that the term is strictly prohibited for anything except a blue diamond. But I don''t read it that way. Furthermore, the inclusion of the word ''white'' in ''blue-white'' (the restricted term) wouldn''t make any sense if you are describing a blue diamond. It would simply be a blue diamond. At least this is how I interpret the language using ordinary English. I realize that other regs may define some words differently.
Derek A. Ward
Attorney and Commercial Real Estate Broker
I remember Premier Diamonds used to fetch a premium also...Date: 5/8/2008 6:29:20 PM
Author: oldminer
Near colorless, blue fluorescent rough initially came from the Premier mine in South Africa. From early in the 1900''s or before, depending on when the mine opened, and into the 1960''s and 1970''s we commonly used this term on certain stones to describe what they looked like. By the 1980''s the term was pretty much obsolete.
On a side note.., I think Russian rough has the largest %''s of fluo. in their assortments these days...Date: 5/9/2008 4:15:10 AM
Author: Paul-Antwerp
Most fluo stones, that we have cut recently, came from Argyle. Just on a side-note.
Date: 5/9/2008 8:06:12 AM
Author: Garry H (Cut Nut)
Here is a question for all you experts:
What % of diamonds that have each of these fluoro grades are oliy or hazy?
Very Strong blue DG DA PfA Todd any one else Everyone else
Storng Blue DG DA PfA Todd any one else Everyone else
Medium Blue DG DA PfA Todd any one else Everyone else
Faint any color DG DA PfA Todd any one else Everyone else
And what % of oily hazy diamonds are non Fluoro?
If you want you can even say what non fluoro % is from twinned knatty effects
And what % is from graining
BTW i am not playing games with winners and loosers - opinions will be valued because there is no real data that I am aware of
What % of diamonds that have each of these fluoro grades are oliy or hazy? Based on my personal experience!!!
Very Strong blue DG less than 5-7% (in direct sunlight..., it would get up to maybe 20%)
Storng Blue DG less than 2% (in direct sunlight..., maybe up to 5-10%)
And what % of oily hazy diamonds are non Fluoro? Much higher..., as oily and hazyness appear from to many factors..., clouds, graining, inclusions (knots and twinings)..., etc..etc...! Now..., if you consider low gem quality material (not including industrial material)..., I would dare throw a guess of 60% plus
If you want you can even say what non fluoro % is from twinned knatty effect
And what % is from graining Based on my experience..., if you consider the unaided eye appearance..., I have yet seen a Diamond of high quality that had internal graining appear oily or hazy..., I. graining will give a different appearance like a division of the material itself by showing lines (similar to internal graining in brown material)!