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SOLD....Loose Diamond: 1.02ct Fancy Vivid Yellow GIA Cushion. Save due to blue R3178

ITEM #: R3178
Cushion Cut Diamond, Loose

WEIGHT: 1.02ct
SHAPE: Cushion Cut
COLOR: Fancy Vivid Yellow
CLARITY: SI2 (our grade)
MEASUREMENTS: 5.75 x 5.22 x 3.80 mm
FLUORESCENCE: Medium Blue (our grade)

Original GIA Report ships with diamond.  We also include our comprehensive appraisal for identification or insurance purposes. How much will my new diamond appraise for?

Have you ever wondered why buses come in threes? Well, there is a well researched statistical reason for that; three chaps by the names of Tim Rice, Rob Eastaway and Jeremy Wyndham even wrote a book about it. There is, however, no reason, statistical or otherwise, why Fancy Vivid Yellow 1 carat cushions should come in twos, but if you look at our new items page, you'll see that they just have. So here is another one. Well, pardon me, a Vivid Yellow is never just another one. And this diamond is rather exceptional on its own.

First of all, finding a well-cut, nicely coloured, decently clear 1.02 ct vivid yellow is not common. It's rarer than a same size and shape D/IF in colorless parlance, which should tell you something. When this rare type of diamond is priced as low as this one, it becomes even rarer.

Color is the primary driver of value in colored diamonds, and generally the purer the yellow, the more valuable the stone. This stone has a smidgen of orange or even (whisper it) brown. Not enough for GIA to grade it anything other than yellow, and yellow it is - but it's a darker, warmer, deeper yellow than a totally pure hue. We like it at least as much as the purest yellow, and it has a more pleasant tint in strong light. It also causes a very pleasant effect in the wallet, since this tiny amount of darker coloration causes the price to drop by at least 15%.

Another positive influence on the price comes from the medium blue fluorescence. Fluorescence has no visible effect on this diamond - unless you bring it to the tanning salon - but it allows the price to drop a little further. Compare the photo above this paragraph with the photo below it: the one above is taken in sunlight; the one below is taken in artificial light (minimal UV). The stone darkens a little, which is normal, given the level of light has also decreased, but there is no other effect.

The final influence on price is clarity. The diamond only comes with a GIA Color Origin report, so we have graded its clarity in-house as SI2. There is a relatively large feather that you can see reflected in the photo above as a darker brown series of spots, in the lower left quadrant of the stone. This is the only photo out of about 20 where it can be seen so clearly - and the photo is magnified about 40 times. The most eagle-eyed of you may be able to see it when observing the stone closely, but not at a normal looking distance.

This diamond is sold loose, but we would be delighted to help you design and manufacture a fabulous setting for it.

You will approve the design, and side stone selection.

When we need to find side stones, we have an extensive selection to choose from.


The entire resources of our factories, well trained in the manufacture of jewelry for fancy colored diamonds, are at your disposal. Matching side stones and designing settings for vivid yellows is an art that we have mastered.

The above listing was written by our good friend OldManCoyote. He's a regular on our colored diamond forum, as well as others ( where he's known as davidelevi). We are grateful to have him share his extensive technical knowledge, as well as a different ( from my) perspective on diamonds and jewelry in general. He is a welcome addition.