Blue stone?

[Niel]

http://www.jamesallen.com/loose-diamonds/oval-cut/1.00-carat-f-color-vs1-clarity-sku-279698

I assume it's just not below a g so it's graded on a white scale? Or is it a reflection of something?

 

[yssie]

Pretty oval!!

Based on this thread a couple of years ago, I would assume the stone is completely colourless and the blue tint in the photo is either an artifact of photography or a reflection of the photographer's shirt:
[URL='https://www.pricescope.com/community/threads/what-color-diamond-doesnt-have-a-yellow-undertone.168762/']https://www.pricescope.com/community/threads/what-color-diamond-doesnt-have-a-yellow-undertone.168762/[/URL]

Hello Yssie,

I believe I can shed a little more light here. I worked in fancy colors at the GIA for a number of years. Please note the responses in red below. If you have anymore questions please let me know.

All the best,

Tom

No, I'm definitely not talking about fluor - only the body colour of the stone. So am I understanding correctly (w/ reference to GIA's grading only):

1. GIA will call a stone with *yellow* body colour of certain strength/saturation (let's call this "X") a K. Correct
2. GIA will call a stone with *brown* body colour of certain strength/saturation >= "X" a K, and will note that colour is due to brown on the report. From K-M Faint brown, N-R Very Light Brown, S-Z Light Brown
3. GIA will call a stone with *yellow* body colour of strenght/saturation color]
4. GIA will call a stone with *brown* body colour of strength/saturation color]
5. If the stone is cut from *pink* rough, it is either a D (completely colourless) or a Faint, Very Light, Light, Fancy, Fancy Intense, Fancy Vivid, Fancy Deep. There is no possibility of acquiring a GIA G with an inkling of *pink*. Same with *blue*. If a diamond is graded D-F it will get only a letter grade regardless of the underlying tint. Remember D-F is termed "colorless" so although there may be something there it would be quite strange for a diamond to be called both colorless and blue. If a diamond has a color other than yellow, brown or gray and has an equivalent color grade of G or below the diamond would then be graded in the fancy color grading scale starting with Faint.
[...]
7. This quote from one of the threads linked above is also wrong: "grey diamonds are graded d-j. if there is more color than a j, it's fancy grey". Gray diamond are a strange exception and treated differently. The post is correct in that a diamond with a gray undertone would be graded on the D-Z color scale until it reached K color. At that point the diamond wold be graded on the GIA fancy color grading system starting with Faint Gray.
[...]

*I edited my quote of my quote to remove irrelevant commentary

 

[diamondseeker2006]

If there is one thing I am sure of, it is that the stone itself is not blue. It would cost 10 times as much!

 

[Niel]

But it could be the stone right? From that it sounds like because this is an F, it could still be blue but colorless so won't get that grade?

I agree it probably a reflection. But I mean based off that snippet you posted this could be that color represented the photo?

 

[Niel]

If there is one thing I am sure of, it is that the stone itself is not blue. It would cost 10 times as much!

Yes it's not going to be strongly saturated but if it has a blue hue but not strong enough to be a G then doesn't GIA have to grade it in the colorless range regardless of tone?

 

[diamondseeker2006]

I'm just saying that regardless of the grade, it it truly had a visible blue under-tone, it would cost a LOT more than $5k. The reflection of blue looked like it was coming from another source to me anyway. It was kind of an aqua blue.

 

[Niel]

I'm just saying that regardless of the grade, it it truly had a visible blue under-tone, it would cost a LOT more than $5k. The reflection of blue looked like it was coming from another source to me anyway. It was kind of an aqua blue.

Yeah probably no more obvious than the a normal yellow tone in an oval. But I've seen ovals in f range with a noticeable (though of course slight) tint.

Just interesting. Probably just photography you guys are probably right. But it is definitely lacking any yellow tint. Which if you compare with other f ovals on JA, the rest of them do portray a slight tint.

 

[artdecolover71]

such a pretty stone! Is this for your new project?!

 

[Andelain]

Must. Not. Poach...................

 

[Niel]

such a pretty stone! Is this for your new project?!

If only.

No I was looking for ovals for another pser and noticed it. Just found it noteworthy.

 

[artdecolover71]

OH! lol
You are always so helpful!

 

[sweet_blossom]

That looks so pretty.