The Moissanite Cut Guide: How to Choose the Shape That's Yours

A 5-minute read before you fall in love with a sparkle.

First, forget what you know about diamond cutting

Diamonds are usually cut to preserve carat weight. Moissanite is cut for one reason only: fire.

With a refractive index of 2.65 (higher than diamond's 2.42) and more than twice the dispersion,every moissanite stone at Aumire is faceted to send light back to your eye as brilliance andrainbow flashes — not to keep extra weight hidden in the pavilion. That's why cut matters morehere than any other "C".

Shop by millimeters, not carats

Moissanite is about 15% lighter than diamond, so a "1-carat" moissanite actually faces up largerthan a 1-carat diamond. Always compare stones by their measurements: a 6.5mm round gives youthe presence of a 1-carat diamond; an 8×6mm oval reads as roughly 1.5 carats. Size your stone byhow it looks on your hand — not by a number on a certificate.

The shapes, honestly described

Round Brilliant — The Classic  Maximum sparkle

• 57–58 facets; the cut that moissanite's fire was built for
• Most brilliant, most forgiving, suits every hand and every setting
• Choose it if: you want the "can't-stop-staring" sparkle and zero regret

Oval — The Elongator  Looks bigger

• 58 facets, ratio 1.33–1.66; visually lengthens the finger
• Faces up larger than a round of the same weight
• Honest note: most ovals show a faint "bow-tie" shadow across the center — a well-cut stonekeeps it minimal. Watch the video, not just the photos
• Choose it if: you want classic sparkle with a slimmer, modern outline

Cushion — The Romantic  Vintage soul

• Rounded corners, ~58 facets; beloved since the 1830s
• "Crushed-ice" cushions glitter in tiny flashes; "brilliant" cushions give broader flashes —decide which mood you prefer
• Choose it if: your Pinterest board says heirloom, candlelight, and halo setting

Emerald — The Minimalist  Quiet luxury

• Step-cut, 57 facets; long mirror-like flashes instead of glitter
• The open table shows everything — stay in the colorless (D–F) range for that icy look
• Choose it if: you wear tailored blazers, not ruffles

Pear — The Statement  Finger-lengthening

• 58 facets, classic ratio 1.45–1.55; wear the point toward your nail
• The tip needs protection — all Aumire pear settings use a V-prong by design
• Choose it if: you like one piece of jewelry to carry the whole outfit

Radiant · Princess · Marquise · Heart — The Bold Four

• Radiant: 70 facets, round's fire in a rectangular frame — maximum drama
• Princess: sharp square geometry, contemporary and bright
• Marquise: the most finger coverage per carat; unapologetically vintage
• Heart: the hardest shape to cut well — symmetry is everything

Still deciding? Use this order

1. Proportions first — a well-cut 1ct out-sparkles a poorly cut 2ct.
2. Shape to your hand —elongated shapes (oval, pear, marquise) flatter shorter or wider fingers; round and cushion suiteveryone.
3. Match your metal — colorless stones in white gold or platinum; near-colorlessglows in yellow or rose gold.
4. Check the video — sparkle is movement. Never buy amoissanite from still photos alone.