Emerald Cut vs Asscher Cut: Step Cuts Compared

Short answer: Both are step cuts with long, mirror-like facets. The emerald cut is rectangular and looks larger on the finger; the Asscher cut is square with deeper, layered facets that create a hypnotic "hall of mirrors" effect and a strong Art Deco feel. Both show inclusions easily, so choose VS clarity or better.

Side by Side

Factor	Emerald	Asscher
Shape	Rectangle with cut corners	Square with cut corners
Look	Elegant, elongating	Vintage, Art Deco
Apparent size	Looks larger	Looks smaller for its weight
Clarity to choose	VS1 or better	VS1 or better

What Is a Step Cut?

Most popular diamond shapes, such as round, oval and pear, are brilliant cuts. Their many small, triangle-shaped facets break light into lots of tiny sparkles. A step cut works differently. Its facets are long, flat and parallel, arranged in rows like the steps of a staircase. Instead of glitter, a step cut gives slow, bright flashes and a clear view into the stone.

That clear view is why step cuts reward clean, well cut stones. It is also why many people love them: they look calm, crisp and architectural.

The Emerald Cut in Detail

An emerald cut is a rectangle with its corners clipped. The open table acts like a window, and the long side facets create a striking pattern of light and dark bands. Because the shape is long, it makes fingers look slimmer and the stone look larger than a square of the same weight.

Shapes range from nearly square to quite long. A moderate rectangle is the classic look, while a slimmer stone feels more modern.

The Asscher Cut in Detail

The Asscher cut was created in the early 1900s by the Asscher family of diamond cutters in Amsterdam. It is a square with large clipped corners, which give it an almost octagonal outline. A high crown and deep pavilion pull the eye down into the stone, where the facets line up in rings that seem to fold inward. That is the famous "hall of mirrors" look.

Because more of its weight sits in its depth, an Asscher can look a little smaller from above than a shallower stone of the same carat weight.

How to Choose Between Them

Pick an emerald cut if you want the most visible size, an elongating effect and a sleek, modern feel.
Pick an Asscher cut if you love vintage and Art Deco design and want a stone with depth and drama.
Either works as a center stone, in a three-stone ring or as side stones in a band.

For a classic setting, see our lab diamond solitaire rings. Step cuts also look striking with tapered baguette side stones in a three-stone ring.

Color and Clarity Tips

The big open table on both shapes makes color easier to see than in a round brilliant. In white gold, a near-colorless grade or higher keeps the stone looking icy. In yellow gold, a slightly warmer stone can still look white. Clarity matters even more: aim for a stone with no inclusions you can see with the naked eye.

What Changes the Cost

Carat weight, color and clarity drive the price of both shapes. Since step cuts show inclusions so clearly, buyers often spend more on clarity than they would for a round. Lab grown stones bring a high-clarity step cut within reach of far more budgets than a mined stone of the same size.

Lab Grown Diamond or Moissanite?

Lab grown diamonds are real diamonds, grown by CVD or HPHT, and they show the clean, glassy look step cuts are known for. Moissanite, at 9.25 on the Mohs scale against diamond's 10, shows more rainbow fire, which some buyers love and others find busy in a step cut. Our moissanite vs lab grown diamond vs diamond guide explains the trade-offs.