Post # 1
Member
13 posts
Newbee
Hi everyone! I have a question about carat to mm conversion that I wanted to pose to the group before going to the jeweler…So, my e-ring is a beautiful cushion solitaire that I guesstimated to be about 3/4 carat based on what I saw when I tried on rings and what Fiance and I discussed getting. I was surprised when I later saw the paperwork that said it was .92 carat. I measured the stone at barely 5x5mm (not a scientific measurement, but definitely close to 5mm) and the charts I’ve seen online say a cushion of that carat should be closer to 6mm. My question is, is it possible that the cut just faces up small on this stone? My concern is that my Fiance paid for more than he got, but I don’t want to make a big deal of it if it’s totally normal for a stone of that carat to be that size. Would welcome anyone’s experience or research on the matter!
Post # 2
Hostess
9738 posts
Buzzing Beekeeper
- Wedding: March 2014 - Chicago, IL
Cushions do face up smaller than rounds – the cut is deeper. You can put the measurements into diamdb.com and it will tell you if your stone is cut too deep, or if it’s proportions are good for the carat weight.
Post # 3
Member
67 posts
Worker bee
Since the carat is based on weight, it might have more depth then width with that cut.. I know hardly anything when it comes to this though…
Post # 4
Member
13 posts
Newbee
sandy87 : good point, thank you!
Post # 5
Member
13 posts
Newbee
FutureDrAtkins : that was very helpful! I put in the measurements and it said that the depth was in the “OK” range, but that it faces up small. If it suggested that the ratio/cut was in a “Not OK” range, I might have talked to the jeweler about it, but I don’t think that’s necessary. Thanks!
Post # 6
Hostess
9738 posts
Buzzing Beekeeper
- Wedding: March 2014 - Chicago, IL
realhousebeesofwb : According to the website I posted, if the diamond is 5×5 mm, it’s cut is inadequate and it does not look it’s weight. For reference, I put in a .92 ct round as a means of comparison.
Post # 7
Hostess
9738 posts
Buzzing Beekeeper
- Wedding: March 2014 - Chicago, IL
realhousebeesofwb : Sorry I must have been making my post when you replied to me 🙂 I think you’re right – it says that the depth is ok. Do you have the paperwork with all the true dimensions listed? The website will “guess” the depth based on carat weight if you don’t fill that section out.
Post # 8
Member
13 posts
Newbee
FutureDrAtkins : That’s also a really good point! I haven’t seen the actual paperwork for the diamond (just the order and receipt for the whole ring). I’ll ask my Fiance if he has it, and if not I”ll ask the jeweler for it and can check that everything is on the up and up. Thanks!
Post # 9
Member
753 posts
Busy bee
It’s normal n for people to think carat = size on hand. The same .92 carat weight could be 5mm or 6.3 mm (a huge difference really even though it seems small).
But also how are you measuring? I ordered chalipers for $20 off amazon they are hard to use even though it looks easy. The same CZ I get readings of 6.95-7.15 depending on the angel of the end when I measure.So if your just using a ruler you maybe off by .1-.3, that seems like nothing, but it can make a big difference on diamb.
Honestly it sounds like your man went for weight not size and got a deep stone. But if it sparkles well I would leave it alone. He may have thought he was doing so well by getting such a “big” stone
Post # 10
Member
13 posts
Newbee
NEAM2014 :Â yeah, I was only using a tape measurer and ruler, not nearly as good as calipers and interesting to hear that even those can give a different reading. As long as it doesn’t seem like he got ripped off, I’m happy! The quality of the stone otherwise is fantastic. Thanks for the feedback!
Post # 11
Member
241 posts
Helper bee
Congratulations on your engagement! Would love to see a picture of your ring!
Post # 12
Member
753 posts
Busy bee
realhousebeesofwb : I’m sure it’s weight is .92 and he didn’t get riped off being sold a .78 and told/charged like it was a .92. It’s just cut really deep. If you want to have some fun seeing how many different MM there is to the same weight got to James Allen and pick a weight (.75 or 1.2) and look at how different the MM’s are for the same shape and same weight.
And yep calipers are hard to use, they must be absolutely parellel. If I tilt the ends just a little when getting a reading it’s all sorts of off. (The stone is 5x7mm officaly, but I keep getting 7.05 lol)
Edit: You may consider that you were “ripped off” by paying for a stone that is .92 but only looks .70-.80 . He paied for weight that is “hidden”. But personally if you like the stone it may cause more issues then it’s worth over a few hundred bucks.
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This reply was modified 3 years, 4 months ago by NEAM2014. Reason: add
Post # 13
Member
753 posts
Busy bee
Member