All 10 Diamond Shapes, Compared
One chart to rule them all: every major diamond shape ranked on sparkle, size-for-the-money, durability, and style — so you can shortlist in two minutes instead of two weekends.
Updated November 2026
Quick verdict
Round is the sparkle king and costs like it. Oval is the value play that looks bigger. Elongated shapes (oval, pear, marquise, emerald, radiant) make fingers look longer and stones look larger. Fancy shapes (everything that isn't round) run roughly 15–40% cheaper per carat. If you're torn, start with the top four by popularity — round, oval, cushion, emerald — and read the head-to-heads linked below.
The master chart
| Shape | Sparkle | Looks big for its carat? | Price per carat | Hides flaws? | Vibe |
|---|---|---|---|---|---|
| Round | ★★★★★ — the benchmark | Average | $$$$ — most expensive | Well | Timeless, classic, safe in the best way |
| Oval | ★★★★ | Yes — up to ~10% larger face-up Value | $$$ | Well | Modern classic, the decade's favorite |
| Cushion | ★★★★ — soft, fiery | Slightly small (deep cut) | $$ — great value | Very well | Romantic, vintage-leaning |
| Princess | ★★★★ | Slightly small face-up | $$ — cheapest brilliant | Well | Sharp, modern, geometric |
| Emerald | ★★ — flashes, not glitter | Yes — big elegant table Value | $$ | Poorly — needs high clarity | Old-money, architectural |
| Radiant | ★★★★★ — crushed ice | Yes, elongated versions | $$ | Best of all shapes Value | Glamorous, flashy |
| Pear | ★★★★ | Yes — one of the biggest looks Value | $$ | Mostly well | Distinctive, fashion-forward |
| Marquise | ★★★ | Yes — largest face-up of all Value | $$ | Mostly well | Dramatic, retro-revival |
| Asscher | ★★ — windmill flashes | Small (deep, square) | $$ | Poorly — needs high clarity | Art-deco, collector taste |
| Heart | ★★★ | Average | $$$ | Mostly well | Unapologetically romantic; polarizing |
How to actually choose (a 3-question shortcut)
1. Glitter or glass?
Brilliant cuts (round, oval, cushion, princess, radiant, pear, marquise) are cut for maximum sparkle — dozens of tiny facets firing light everywhere. Step cuts (emerald, asscher) are cut into long clean planes that flash like a hall of mirrors. Sparkly vs sleek is the biggest fork in the road, and it's pure taste.
2. Does "looks bigger" matter?
Elongated shapes spread their weight across more visible area. A 1.5 ct oval, pear, or marquise can read like a 2 ct round from across the table. If size-per-dollar is a priority, shop elongated. More in our carat size guide.
3. What's already on her Pinterest?
Seriously. Most people have been leaving a trail of evidence for years. Ten minutes of scrolling beats any chart on the internet — including this one, and we made this one.
The four matchups people actually agonize over
Once you've shortlisted, these head-to-heads settle it:
Where we'd actually shop
The retailers worth your time for this decision:
James Allen
360° HD video of every single stone, so you can inspect the exact diamond — inclusions and all — before you buy.
Blue Nile
Massive inventory of GIA-graded natural diamonds and frequent sitewide sales. The default place to start a search.
Rare Carat
A price-comparison engine for diamonds — it pulls stones from dozens of vendors so you can see the whole market at once.
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