Moissanite 101 ยท Shape vs Shape
Every Moissanite Shape Pair Compared: 19 Head-to-Heads in One Place
Torn between two shapes? Find your pair below, read the one-line verdict, then open the full comparison.
Written by the Mapple Gems workshop, Surat ยท Updated 27 September 2026
Short answer
When choosing between two moissanite shapes, three questions settle most pairs. How much fire do you want? Round is the most, emerald the least. How large should it look? Marquise, pear and oval look largest per carat. How much do you want to protect? Round and oval have no points; pear, marquise, heart and princess need V-prongs. The table below gives the verdict for every common pair.
Most people don't choose a shape from ten options โ they narrow it to two and get stuck. This page collects every head-to-head comparison we have written for moissanite, with a single-line verdict for each so you can see the deciding difference at a glance. Each links to a full article with measurements, fire, durability, wedding band fit and FAQs.
If you are still at the stage of looking at all ten shapes, start with our complete moissanite shape comparison.
The three levers behind every pair
Fire. Moissanite's dispersion is 0.104, more than twice diamond's 0.044, and shape decides how much of that colour you see. From most to least: round and crushed-ice cushion โ oval, pear, marquise, heart โ radiant โ princess โ chunky cushion โ Asscher โ emerald.
Face-up size. At 1 ct diamond equivalent weight: marquise about 10 ร 5 mm, pear 8 ร 5.5 mm, oval 7.5 ร 5.5 mm, emerald 7 ร 5 mm, round 6.5 mm, radiant 6.5 ร 5 mm, cushion 6 mm, princess and Asscher 5.5 mm.
Points and corners. Round and oval have none. Cushion, radiant, emerald and Asscher have rounded or cropped corners that each need a prong. Pear, marquise, heart and princess have sharp points that need V- or L-prongs.
Round vs everything
| Pair | The deciding difference |
|---|---|
| Round vs oval | Round: most fire, no bow-tie. Oval: about 15% longer and lengthens the finger. |
| Round vs cushion | Round faces up larger. Cushion is softer and vintage โ crushed ice or chunky changes its fire. |
| Round vs princess | Round: more fire, no corners. Princess: modern square with four points to protect. |
| Round vs emerald | The most fire against the least. Emerald is the calmest, most diamond-like at large sizes. |
| Round vs pear | Pear keeps near-round sparkle but adds length and one point. |
| Round vs marquise | Smallest vs largest look per carat: 6.5 mm against 10 ร 5 mm. |
Oval vs everything
| Pair | The deciding difference |
|---|---|
| Oval vs pear | Same sparkle and size. Pear adds one point and a more distinctive look. |
| Oval vs marquise | Marquise: most size per carat, two V-prongs. Oval: nothing to protect, never dates. |
| Oval vs cushion | Oval looks larger. Cushion takes a straight band more easily. |
| Oval vs emerald | Rainbow or calm: the most and least fiery elongated shapes. |
| Oval vs radiant | Curves vs corners. Oval is larger; radiant avoids a noticeable bow-tie. |
Pointed shapes
| Pair | The deciding difference |
|---|---|
| Pear vs marquise | One point or two. Marquise is longer; pear is easier to maintain and band. |
| Pear vs heart | Everyday elegance or romantic statement. Hearts read best above 1 ct. |
Squares, rectangles and step cuts
| Pair | The deciding difference |
|---|---|
| Emerald vs radiant | Same outline, opposite sparkle: step cut vs brilliant. |
| Emerald vs Asscher | The two calmest shapes. Emerald is longer; Asscher is a compact Art Deco square. |
| Cushion vs radiant | Rounded corners or cropped โ soft vintage vs crisp modern. |
| Princess vs radiant | Sharp vs cropped corners. Radiant is the more forgiving square. |
| Princess vs cushion | Modern square or vintage square. Cushion is easier to wear. |
| Asscher vs princess | Same size, mirrors vs sparkle. |
From the workshop: the pattern behind all 19.
Writing these side by side, one pattern kept repeating. In moissanite, size and fire pull in the same direction: the bigger the stone, the more colour it shows, because colour needs depth to separate. So the question "which shape?" is really two questions โ how big, and how colourful โ and step cuts are the only way to go large without the rainbow growing with it.
The second pattern: almost every regret we could imagine was a setting question, not a shape question. A point without a V-prong, an oval without a planned wedding band, a 4 ct marquise on a short finger. Choose the shape you love; then make sure its one specific requirement is handled before the ring is made.
Frequently asked questions
How do I choose between two moissanite shapes?
Ask three questions: how much fire you want, how large it should look, and whether you mind protecting points or corners. Round is the most fiery and emerald the least; marquise, pear and oval look largest; round and oval have no points.
Which moissanite shape looks biggest?
Marquise, at about 10 ร 5 mm for 1 ct diamond equivalent weight, followed by pear and oval. Princess and Asscher look smallest, at about 5.5 mm square.
Which moissanite shape has the least rainbow?
Emerald, followed by Asscher. Their long, flat step facets return light in broad flashes rather than splitting it into colour, which makes them the calmest moissanite shapes at any size.
Which moissanite shapes are easiest to wear every day?
Round and oval, because they have no points or corners. Cushion and radiant are close behind. Pointed shapes are perfectly wearable with V-prongs and a bench check every couple of years.
Which moissanite shapes take a straight wedding band?
Round, square cushion, princess and Asscher usually do. Oval, pear, marquise and emerald usually need a contour band. Check the side view of the design before it is made.
Down to two? Send us both.
Every ring is made to order in our Surat workshop. Tell us the two shapes and the size you're considering, and we'll send the exact millimetres for both.
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