TL;DR: a round diamond is the classic, with the most sparkle of any shape and a timeless look. A cushion is a soft square or rectangle with rounded corners, and it tends to look warmer and more romantic, with larger flashes of light. Round suits people who want brilliance, and cushion suits people who want softness. Look at the actual stone before you decide. Pieces start from £600.
The round brilliant
The round shape is the most widely used, and its faceting is designed to return light well. Many people find it bright and lively. It sits well in almost any setting, from a plain solitaire to a halo. See round brilliant diamonds: pros and cons.
The cushion
A cushion cut has rounded corners and a soft outline, like a pillow. Some cushions have a crushed ice look with many small facets, and others have larger, more open facets. This changes the character of the stone, so look at specific stones, not only the shape name. See cushion cut diamonds: pros and cons.
How they compare
- Sparkle: round is usually brighter and more scattered. Cushion can look softer.
- Look: round is classic. Cushion has a vintage, romantic feel.
- Size: depends on proportions. Compare dimensions as well as weight.
- Practicality: both have no sharp points, which is good for everyday wear.
- Cost: round stones are often priced higher per carat than other shapes, because demand is high. Ask us for a quote.
Cut grade
Round brilliants usually receive a cut grade on a report, which gives a useful guide to how well the stone returns light. Cushions usually do not, because their proportions vary so much. That makes it even more important to see a cushion on video and judge its sparkle with your own eyes, rather than relying on numbers alone.
Choosing a setting
A round stone suits solitaires, halos and three stone designs. A cushion suits halos and vintage inspired settings, and it also looks lovely in a simple setting that lets the soft shape show. See our guides to settings for a round brilliant and settings for a cushion cut.
Which suits which person
If your partner likes classic, bright jewellery that goes with everything, a round stone is a safe and beautiful choice. If they love antique style, soft lines and a slightly romantic look, a cushion may feel more like them. Think about the rest of their jewellery. If most of it is delicate and minimal, a round stone in a slim band often fits. If it is warm and detailed, a cushion in a halo or a vintage inspired setting may suit.
Looking at the stone
Photographs and video show what a report cannot. Ask for both. Our guide to reading your invoice and certificate explains the paperwork, and our clarity scale guide explains one of the grades.
Natural or lab grown
Both shapes are available as natural and lab grown diamonds. We describe each plainly. Browse diamonds.
Working with us
We work by video consultation and message, send sketches and CAD renders, and make nothing until you approve the design in writing. Standard making time is 5 to 6 weeks, varying with your location and how busy we are. Overseas, the customer pays import duty and tax, and delivery is insured and tracked with FedEx.
Frequently asked questions
Which sparkles more?
A round is usually brighter, but each stone differs.
Is a cushion old fashioned?
It has a vintage feel, and it suits modern designs too.
Which is more practical?
Both are, as neither has sharp points.
Does a cushion get a cut grade?
Usually not, so we judge it by seeing the stone.
Which costs more?
Round often does. We quote against your brief.