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Engagement Ring Help Please! Marquise cut


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Hi everyone. My fiancé recently purchased me a ring sight unseen from a local jewelery store. It is a marquise halo cut diamond that is 1.32 carats. The ring measures  9.84 x 5.77 x 3.72 mm. After doing some research on marquise rings I found that typically a 1.3 diamond would be a little longer (around 11mm) and be the same width and depth as the ring my fiancé purchased. With all this being said, I began to wonder if the ring he purchased is indeed 1.32 carats. I’m wondering is it possible for the ring to be that carat size with the measurements listed? Any information anyone can provide is greatly appreciated. 

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Hello Ellie, welcome to Diamond Review, and congratulations on your engagement!

You are right that a marquise stone with those dimensions is unlikely to be 1.32 ct (unless it's very rounded, almost an oval). However, it's possible that the 1.32 ct refers to the "total carat weight" of the ring, i.e. the centre stone plus the halo stones. Without seeing any documentation , that would be my guess: a typical marquise with those dimensions would weigh about 1.15 - 1.25 ct, leaving 0.10 to 0.15 ct approximately for the halo stones.

Whether that's been explained to your fiancé is a different matter entirely.

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It's possible.  There are quite a few variables here, not the least of which is the accuracy of those measurements but also things like the girdle thickness and shape of the pavilion. If you can arrange it, by the way, get it checked out by a real appraiser, not a competitive jeweler. There are some significant conflicts of interest at play here.

Is there any paperwork, like a lab report, on that stone?  The jeweler almost certainly would have provided it if they had one but your fiance may not have understood it's importance, even in a blind purchase like you describe. That will list the weight and even bad labs are reliable on this point.  The same holds for dimensions. Accurately measuring to 1/100 of a millimeter takes decent and calibrated equipment. Labs will have this. Diligent appraisers will have it. Most jewelry stores don't. 

Where are you?

Edited by denverappraiser
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