
08.12.21
The Ultimate Guide to the Cushion Diamond
By Stephanie Dore
Whatâs more unique than you? Okay, well, at least as unique…a cushion diamond of course! No joke tho, while we in the industry like to say every diamond is totally unique, when it comes to cushion cut diamonds thatâs like, way true. Not only is this stunning, super sparkler of a shape totally on trend (yes, still), each one is so itself that you really do have to see it with your own two eyes to know itâs right for you. But not to worry, weâre here to help guide you down the right path with everything you need to know about how to pick an ideal cushion diamond engagement ring without all the confusion.

Once Upon a Time
First things first, cushion cut diamonds are old. Like, really old. And we donât mean it in that âdiamonds were created millions of years ago deep inside the Earthâ way. Though, thatâs also totally true. See, modern cushion cut diamonds are the direct descendants of the old mine cut diamond, from like the 1800s. We did say old, didnât we? Sure, modern cushions are now cut by fancy machines and lasers and things, so theyâre super sparkly and refined. But the same general shape is still there. What makes a cushion unique? Itâs soft and pillowy, all rounded corners and curved sides and a bit of elongation (or a lot if you like) â itâs a total contrast from the sharp edges of a radiant or the perfect circle of a round or the step cut Asscher…you get the picture. The softness of a cushion is ultra romantic and, quite frankly, super versatile when it comes to designs. You can set it in almost any style youâd set a round, for instance.
But One of These Things
Yeah, itâs not a round. So different, in fact, that it doesnât even have a cut grade. Actually, no fancy shapes (which is any shape but a round) do. So, while the cut of a cushion is still totally important to how it sparkles, the grade you might see listed is pretty subjective. Can you use it as a starting point to help narrow your search? Sure thing. Just make sure to dig a little deeper to verify itâs actually well cut, you know, with your eyes.
Math Mode
When it comes to cushions, we suggest starting with shape, which is to say â do you prefer a more square shape or something elongated? This is where length to width ratio comes into play. A 1:1 ratio, which might be listed as just 1.00 will give you that rounded square shape thatâs closest to the look of, well, a round brilliant cut diamond. But a little more special. Go up, say to 1.15 or 1.30, and youâll get that more elongated shape. Itâs a great alternative to an oval and gives you lots of finger spread, especially if set horizontally across the finger. Elongated stones are, however, much more difficult to source, so reach out to our Diamond Concierge and weâll get on that for you.

Thank You, Next
Beyond simply proportions, one of the major considerations for cushion cuts is their unique faceting patterns, which can vary from one stone to the next. Without getting too nerdy on you, the smaller the pavilion facets, the more bright white sparkle youâll get, while larger facets tend to get you more rainbow flash.
Thereâs also whatâs called a âcrushed iceâ cushion cut. Which is basically a modified facet pattern that breaks up some of those pavilion facets and results in, well, a crushed ice look. Imagine just that â a super glittery look that kind of bounces light everywhere. It wonât have the distinctive scintillation pattern of a standard cushion, but itâs beautiful in its own way.
Over the Rainbow
Cushion cuts, and radiants too, tend to hold their body color a bit more visibly than other shapes. This is great if youâre going for a colored stone (and why youâll see these shapes frequently for fancy colored diamonds or colorful gemstones), but if youâre going for coloress…well, not so much. If thatâs the case, youâll probably want to go, say, H color at the lowest, and then set it in platinum or white gold to really show off that bright white stone. If you like a little bit of warmth, though, you can play in the lower color grades. Set them in yellow or rose gold and youâll have some extra sunshine on your finger for a rainy day.
Seeing Things
When selecting a clarity grade for cushion cuts, youâll want to go back to that cut pattern thing. Whereas crushed ice cushions hide inclusions super super well behind all that sparkle, a cushion with a chunkier pattern â and thus, more wide open facets â wonât do the same. If youâre going with a chunkier style stone, try to avoid inclusions under the table, especially, and maybe pay out for a slightly higher grade. But if you have a stone with smaller, more broken up facets, you can easily find something eye clean in the SI range, no problem.


Cushion Diamond Weight Woes
While cushion cuts will always be more affordable than round diamonds, they are still pretty popular, so youâre not going to save as much cash as you would with other fancy shapes. They also wonât look much bigger, especially if youâre going with a more 1:1 ratio stone â which will face up pretty close in size with a comparable weight round. Go elongated and youâll get a bit more finger coverage, though. If youâre into that kind of thing. If you want to look at real cost saving options, lab created cushion cut diamonds can be about 40-50% less than a comparable mined diamond and, yes, theyâre still diamonds. Chemically, physically, optically the exact same. Not enough? Try moissanite! Itâs a totally different stone that is nearly as durable, has the same look, and in fact has even more sparkle. Whatâs not to love?
Itâs Exclusive
Once youâve found the stone of your dreams, unless youâre going super simple with a four-prong setting and thatâs all folks, your cushion cut engagement ring should be totally custom. Why? Because with so much variation from one cushion to the next, a setting can end up with weird gaps or prongs that donât sit right on the corners. This is especially true if youâre going with a fuller-coverage design like a bezel or halo, which, obvi, you want to fit perfectly. Our team of jewelry craftsfolk makes super sure to fit your setting to your cushion cut diamondâs unique specifications, or any shape you choose for that matter.

Make it Yours
Get started by designing your own totally unique cushion cut engagement ring with our style quiz and youâll even get a free sketch. Want to start with a stone? Check out our diamond search where you can view 360-degree images of more than 10,000 diamonds (including countless cushion cuts) and donât forget to zoom out (because size can be deceiving), or book a virtual or offline appointment at our New York salon to view certified lab-grown and natural diamonds in person. Not finding what youâre looking for? Email us with what youâre looking for at hello@frankdarling.com. Weâll curate a list of 5-7 exclusive stones that are just right for you.