A cushion cut lab-grown diamond engagement ring pairs a soft, pillow-shaped stone with the brilliant faceting that gives diamonds their fire — a romantic, slightly vintage look that sits between the crisp sparkle of a round and the clean lines of an emerald cut. At Alya Stone, every cushion is a lab-grown diamond, D–F colour and VS clarity or better, IGI certified at one carat and up, set in solid gold and made to order. This guide explains what the cushion cut is, how it compares to other shapes, which settings flatter it, and how to choose yours.
What is a cushion cut diamond?
A cushion cut is a square or gently rectangular diamond with rounded corners — the outline of a pillow, which is where the name comes from. It is one of the oldest diamond shapes still in production, descended from the antique “old mine” cut, so it carries a heritage, candle-lit romance that very modern shapes can lack. Today’s cushions are cut with brilliant-style faceting, meaning lots of light-returning facets rather than the long, mirror-like steps of an emerald cut.
That faceting is the cushion’s signature. Because the facets are larger and more open than a round’s, a cushion tends to show more fire — the flashes of rainbow colour — and a softer, warmer sparkle. You will hear two faceting styles described: “chunky” (bold, blocky flashes) and “crushed ice” (a glittery, shattered-light look). Neither is better; it is a matter of taste.
Square vs elongated cushion
Cushions come in two proportions, and the choice changes the whole feeling of the ring. The measurement that matters is the length-to-width ratio.
| Look |
Length-to-width ratio |
Best for |
| Classic (square) cushion |
1.00 – 1.05 |
A balanced, antique, romantic look; suits most hands |
| Slightly cushioned square |
1.06 – 1.15 |
A touch of softness without looking long |
| Elongated cushion |
1.20 – 1.35+ |
A longer, finger-lengthening line; reads larger face-up |
An elongated cushion — like our Bianca Elongated Cushion or Esme Elongated Cushion — flatters longer because the eye travels down the finger. A classic square cushion like the June Cushion feels more traditional and symmetrical.
Cushion cut vs round vs oval
The cushion sits in a sweet spot between the two most popular shapes. Here is how it compares at a glance.
| |
Cushion |
Round |
Oval |
| Sparkle style |
Soft, fiery, romantic |
Maximum white brilliance |
Bright, elongating |
| Face-up size (1ct) |
~5.5 mm |
~6.5 mm |
~7.7 × 5.7 mm |
| Feeling |
Vintage, warm |
Timeless, classic |
Modern, slender |
| Hides colour/inclusions |
Good |
Excellent |
Good |
A round of the same carat will look a little larger from the top and throws the brightest white sparkle, which is why we cover it in our diamond shapes guide. An oval gives the most finger-lengthening spread. The cushion trades a little of that face-up size for fire and a softer outline — the most romantic of the three. Because a cushion’s open facets are slightly more forgiving than a step cut but show a touch more body colour than a round, our D–F colour standard keeps every stone bright and icy white.
The best settings for a cushion cut
The cushion’s soft outline is wonderfully versatile. A few directions we love:
-
Classic solitaire — lets the pillow shape speak for itself, as in the June Cushion Classic Solitaire.
-
Hidden halo — a concealed ring of tiny diamonds under the stone makes a cushion look larger and adds sparkle from above without a visible halo. See the Aura Cushion Hidden Halo.
-
Cathedral pavé — graceful shoulders that lift the stone, with a line of pavé for extra brilliance, like the Cora Cushion Cathedral Pavé.
-
Bezel — a clean metal rim that protects the stone and suits a modern, low-profile wearer; see the Terra Cushion Heavy Bezel.
To learn how each style wears day to day, see our full engagement ring settings guide.
A few cushion rings to start with
Explore the full range in our cushion cut lab-grown diamond engagement rings collection, or browse all lab-grown diamond engagement rings.
How to choose a cushion cut lab-grown diamond
Four quick decisions get you to the right ring:
-
Outline: classic square for antique symmetry, or elongated for a longer, larger-looking stone.
-
Colour: stay D–F so the open facets read icy white — the standard on every Alya Stone cushion.
-
Carat & setting: a hidden halo or cathedral makes a one-carat look generous; see our carat size guide for mm-by-shape.
-
Metal: warm yellow gold leans vintage; white gold or platinum keeps it crisp and contemporary.
Because the diamonds are lab-grown, you can choose a larger or higher-colour cushion for the same money than a mined stone would allow — more diamond, same craftsmanship.
Frequently asked questions
Are cushion cut diamonds less sparkly than round?
They sparkle differently. A round returns the most white brilliance, while a cushion shows more fire — broader, more colourful flashes — with a softer, romantic glitter. Many people prefer the cushion’s warmer character.
Do cushion cut diamonds look smaller than rounds?
Slightly. A one-carat cushion measures about 5.5 mm across versus roughly 6.5 mm for a round, because a little more weight sits in the depth. Choosing an elongated cushion or a hidden-halo setting closes that gap.
What colour and clarity should I choose for a cushion cut?
Aim for D–F colour and VS clarity or better. Cushion facets are a touch more open than a round’s, so a high colour grade keeps the stone bright and white. Every Alya Stone cushion meets this standard and is IGI certified at one carat and above.
Is a cushion cut good for an engagement ring?
Yes. It is durable thanks to its rounded corners, flatters most hands, and its vintage romance has made it one of the most enduring engagement shapes. It also pairs beautifully with halo, cathedral and bezel settings.
How much is a cushion cut lab-grown diamond ring?
At Alya Stone, cushion rings start from HK$9,880 for the June Cushion solitaire in solid gold, with hidden-halo and cathedral styles a little above. Lab-grown diamonds let you size up for the same investment compared with a mined stone.
Cushion Cut Lab-Grown Diamond Engagement Rings: A Complete Guide
A cushion cut lab-grown diamond engagement ring pairs a soft, pillow-shaped stone with the brilliant faceting that gives diamonds their fire — a romantic, slightly vintage look that sits between the crisp sparkle of a round and the clean lines of an emerald cut. At Alya Stone, every cushion is a lab-grown diamond, D–F colour and VS clarity or better, IGI certified at one carat and up, set in solid gold and made to order. This guide explains what the cushion cut is, how it compares to other shapes, which settings flatter it, and how to choose yours.
What is a cushion cut diamond?
A cushion cut is a square or gently rectangular diamond with rounded corners — the outline of a pillow, which is where the name comes from. It is one of the oldest diamond shapes still in production, descended from the antique “old mine” cut, so it carries a heritage, candle-lit romance that very modern shapes can lack. Today’s cushions are cut with brilliant-style faceting, meaning lots of light-returning facets rather than the long, mirror-like steps of an emerald cut.
That faceting is the cushion’s signature. Because the facets are larger and more open than a round’s, a cushion tends to show more fire — the flashes of rainbow colour — and a softer, warmer sparkle. You will hear two faceting styles described: “chunky” (bold, blocky flashes) and “crushed ice” (a glittery, shattered-light look). Neither is better; it is a matter of taste.
Square vs elongated cushion
Cushions come in two proportions, and the choice changes the whole feeling of the ring. The measurement that matters is the length-to-width ratio.
An elongated cushion — like our Bianca Elongated Cushion or Esme Elongated Cushion — flatters longer because the eye travels down the finger. A classic square cushion like the June Cushion feels more traditional and symmetrical.
Cushion cut vs round vs oval
The cushion sits in a sweet spot between the two most popular shapes. Here is how it compares at a glance.
A round of the same carat will look a little larger from the top and throws the brightest white sparkle, which is why we cover it in our diamond shapes guide. An oval gives the most finger-lengthening spread. The cushion trades a little of that face-up size for fire and a softer outline — the most romantic of the three. Because a cushion’s open facets are slightly more forgiving than a step cut but show a touch more body colour than a round, our D–F colour standard keeps every stone bright and icy white.
The best settings for a cushion cut
The cushion’s soft outline is wonderfully versatile. A few directions we love:
To learn how each style wears day to day, see our full engagement ring settings guide.
A few cushion rings to start with
Explore the full range in our cushion cut lab-grown diamond engagement rings collection, or browse all lab-grown diamond engagement rings.
How to choose a cushion cut lab-grown diamond
Four quick decisions get you to the right ring:
Because the diamonds are lab-grown, you can choose a larger or higher-colour cushion for the same money than a mined stone would allow — more diamond, same craftsmanship.
Frequently asked questions
Are cushion cut diamonds less sparkly than round?
They sparkle differently. A round returns the most white brilliance, while a cushion shows more fire — broader, more colourful flashes — with a softer, romantic glitter. Many people prefer the cushion’s warmer character.
Do cushion cut diamonds look smaller than rounds?
Slightly. A one-carat cushion measures about 5.5 mm across versus roughly 6.5 mm for a round, because a little more weight sits in the depth. Choosing an elongated cushion or a hidden-halo setting closes that gap.
What colour and clarity should I choose for a cushion cut?
Aim for D–F colour and VS clarity or better. Cushion facets are a touch more open than a round’s, so a high colour grade keeps the stone bright and white. Every Alya Stone cushion meets this standard and is IGI certified at one carat and above.
Is a cushion cut good for an engagement ring?
Yes. It is durable thanks to its rounded corners, flatters most hands, and its vintage romance has made it one of the most enduring engagement shapes. It also pairs beautifully with halo, cathedral and bezel settings.
How much is a cushion cut lab-grown diamond ring?
At Alya Stone, cushion rings start from HK$9,880 for the June Cushion solitaire in solid gold, with hidden-halo and cathedral styles a little above. Lab-grown diamonds let you size up for the same investment compared with a mined stone.