Learn · Diamond and gemstone shapes

Emerald cut

An emerald cut does not sparkle; it flashes. Long, parallel facets step down the stone like a hall of mirrors, so instead of a thousand small glints you get broad, clean planes of light. It is the quiet, architectural choice.

3D render of an emerald-cut three-stone ring from the Pacific Jewel Design Studio

What it is

The emerald cut is a rectangle with its corners cut off, faceted in steps rather than in triangles and kites. The large, open table shows the inside of the stone plainly, and the stepped crown and pavilion catch light as wide flashes when the hand moves.

The cut corners are a structural point: they protect the stone, and they are where the prongs sit. Emerald cuts are usually set with four prongs at the corners, in a bezel, or as the center of a three-stone with tapered baguettes or rounds at the sides.

Emerald cut

A rectangle with cut corners and long, stepped facets.

CAD rendering of an Art Deco ring with a teal emerald-cut stone, black accents and a scalloped frame, designed by Sara Lundquist
How Sara modeled it in CAD. Art Deco ring with a teal emerald cut. One of Sara's own designs · CAD rendering

Why people love it

Elegant and understated. An emerald cut looks large for its weight, because its depth is shallower than a brilliant, and it costs less per carat than a round. On the hand it reads as clean lines rather than glitter, which suits people who find brilliants too busy.

  • Elegant, architectural flashes of light rather than sparkle.
  • Looks large for its weight.
  • Costs less per carat than a round.
An emerald-cut blue sapphire held in tweezers
An emerald-cut blue sapphire.

Trade-offs

Step cuts hide nothing. Inclusions that a round would scatter behind its sparkle are visible through an emerald cut's open table, and so is color. That means the stone usually needs to be cleaner and whiter than a brilliant of the same size, which eats into the per-carat saving.

And it will never have the fire of a round. If you love sparkle, an emerald cut can feel calm to the point of plain. A radiant cut gives the same outline with brilliant faceting underneath.

  • Step cuts hide nothing: clarity and color show more, so the stone needs to be cleaner.
  • Less sparkle than brilliant cuts.

Who it suits

Someone who likes clean, modern or vintage-leaning design, who wants a large look at a sensible weight, and who is happy to prioritise clarity. It looks especially good on longer fingers and in a bezel or a three-stone.

Sizes

Length × widthDepthDiamond · approx.
6.0 × 4.3 mm2.8 mm0.65 ct
7.0 × 5.0 mm3.3 mm1.03 ct
8.0 × 5.7 mm3.8 mm1.54 ct
9.0 × 6.4 mm4.2 mm2.20 ct
10.0 × 7.1 mm4.7 mm3.02 ct
11.0 × 7.9 mm5.2 mm4.02 ct

Emerald-cut lengths at a 1.4 ratio with the approximate diamond weight at a typical 66% depth. Step cuts vary more than brilliants; the certificate gives the real weight. Natural and lab-grown diamonds weigh the same. All figures approx.

What affects the cost

Clarity and color matter more here than in any brilliant cut, because the stone shows them. Carat weight and the ratio come next. Lab-grown emerald cuts are widely available and make a very clean, large stone far more reachable than a natural one of the same grade.

The setting is usually simple, which keeps the piece's metal and labor modest; a three-stone adds two more stones and two more heads.

Every custom piece is quoted after a consultation; there are no posted prices for custom work.

Care

A diamond is the hardest thing you own, but the metal around it is not. Take the ring off for the gym, the garden and anything with a bar or a rope in it, and keep it away from chlorine and bleach, which attack gold alloys over time.

Clean it at home in warm water with a drop of dish soap and a soft toothbrush, rinse, and dry with a lint-free cloth. Once a year or so, have the prongs checked. Pacific Jewel rings come back to Sara for a clean and an inspection whenever you like.

Questions

Emerald cut or radiant?

Same outline, different light. The emerald cut flashes in broad planes; the radiant has brilliant faceting and sparkles. See both in the studio.

What ratio should an emerald cut be?

Between 1.3 and 1.5 is classic. Squarer stones read as an Asscher-style look; longer ones are more elongated and modern.

Do emerald cuts chip easily?

The cut corners make them more durable than a princess cut. Prongs at the corners or a bezel protect them for daily wear.

Does clarity matter more in an emerald cut?

Yes. The open table shows what is inside. Sara usually looks for a higher clarity grade than she would in a round.

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