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 flourescence 'FAINT'?
P:  1/17/2004 6:28:53 AM  
warranip
warranip

Rough Rock
Total Posts: 4
Last Post: 1/17/2004
Member Since: 1/16/2004
 
 		If GIA grade the flourescence as FAINT, does it mean that it's blue faint? or it may be some other colour than blue?

 
Posted:  1/17/2004 6:28:53 AM

 There are 1 replies to this message.  There are 1 replies on this page.
P: 1/17/2004 7:14:29 AM
valeria101
valeria101

Ideal Rock
Total Posts: 14,048
Last Post: 4/30/2006
Member Since: 8/29/2003
 
 		90% would be blue, yellow is the next probable, orange, green and violet are mentioned as oddities.

Just not to keep it short:
"Faint" intensity means that... you will not see it unless using a UV light with all others blocked. The flourescence will not affect the appearence of the stone in any normal lighting, despite their spectrum. Stronger fluorescence may say it's word in sunlight or certain indoor lighting. My impression is that fluorescence tends to "show" more the more tinted the color grade is: for example, a Y-Z would literally change face from yellow to (hard to describe) if it has strong fluorescence. However, I cannot discern the impact of faint fluoresecence even in these color grades.

Ana "The greatest experts are only as good as the sum total of what they have seen." [Souren Melikian]
Posted:  1/17/2004 7:14:29 AM

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