The Diamond I Got Is Blue.

[SuperDave]

I recently got a diamond from a well respected jewelry store.

The GIA cert (dated May 18, 2007) states no fluorescence.
The independent appraiser said it has slight/negligible fluorescence.
I looked at it under a black light and it didn’t seem to fluoresce at all to me-one of the small stones in the micro pave fluoresced so it was easy to compare.

In direct sunlight only, the stone looks like it’s all a very faint blue/purple which really stands out against the white gold and micro pave setting. What gives? Did I get a bad stone? Is this natural and common?

Please share your thoughts.

 

[decodelighted]

Diamonds are a bit like mirrors and reflect whatever they face. Could it by the blue sky you''re seeing reflected? Also -- bigger diamonds are bigger mirrors ... the little ones wouldn''t be as impacted by environment ... thus, the discrepency in color.

Just a guess.

 

[SuperDave]

Thanks Decodelighted.

I never thought about the sky having an impact on the color. The day I proposed was cloudy and that was when we noticed it. So I guess it turns blue in indirect sunlight too. The diamond is a 1.32 carat G color. Should have mentioned that in the original post.
Thanks for your reply.

 

[strmrdr]

was it tested in both long and short wave UV by the appraiser?
I''m drawing a blank on which it is but a bright overcast day would be a lot stronger on one than the other.
Some diamonds will be highly reactive to one and hardly at all too the other.

 

[Munchkin]

Were either of you wearing blue?
Whenever I wear pink or purple my diamond truly looks pink or lavender. It freaked me out at first! My stone has faint flour.

 

[denverappraiser]

Back in the 70's I took a job at a jewelry store. One of the ‘tricks of the trade’ that was taught to me by the owner there was that he always liked to wear a yellow shirt when he had an appointment with someone he planned to beat up on the color grading, which was pretty much everyone, and would wear a white shirt when he was selling. It made the stones he was buying look yellower for exactly the reasons discussed above. This was before ‘certificates’ accompanied every stone and every deal involved an argument over the grading. It was just part of the ritual of the trade. Presumably this would result in better prices. I sort of doubt that his shirts had much affect on the asking prices by his suppliers but it does have a substantial affect on the way the stones look from the face up position so the idea wasn't completely nuts.

Neil Beaty
GG(GIA) ICGA(AGS) NAJA
Professional Appraisals in Denver

 

[door knob solitaire]

Neil...sounds like all trades have their secrets...(but that one is sneaky)

Car dealers sell bad paint cars in the rain..or at night.

Produce like tomatoes are in red plastic netting.

The love of money (profit) is the root of all evil (deception!!!)

DKS