Cuts

Emerald cut lab grown diamonds: a supplier's guide for jewellery brands

The step cut hides nothing. Here is what to specify, and what it costs you to get it wrong.

Mira Gems Supply Desk5 min read
Polished lab-grown diamonds in a range of cuts

Emerald-cut diamonds are recognised for their clean lines, elongated shape and step-cut faceting. Unlike a brilliant cut, the step cut does not scatter light enough to hide anything. It places the weight of the stone on clarity, symmetry and proportion, which is exactly why buyers get burned on it.

Why demand keeps growing

Demand continues to grow across engagement rings, bespoke jewellery and high-value solitaire programmes. The refined appearance and strong presence in larger carat weights make emerald cuts particularly popular with luxury brands and designer collections.

  • Engagement rings
  • Fine jewellery collections
  • Designer jewellery
  • High-carat solitaires
  • Luxury retail programmes
A cutter working a diamond on the wheel
Step cuts punish a rushed polish. There is nowhere for an error to hide.

What to specify when you order

Specify clarity higher than you would for a round of the same size. An SI inclusion that disappears in a brilliant cut will sit in plain view through an emerald cut table. Specify the length-to-width ratio too, because two stones at the same carat weight can look like different products on the hand.

  • Shape: Emerald Cut
  • Faceting style: Step Cut
  • Carat range: 0.50 to 20+ carats
  • Colour and clarity: D to J, IF to SI
  • Certification: IGI certified available

How we manufacture them

We cut emerald shapes from CVD rough, which grows flat and tabular and therefore suits the geometry of a step cut with less waste. Every stone is graded internally before it goes to IGI, and colour-locked lots mean a repeat order matches the first.

A collection that runs for three years needs a stone that looks the same in year three.

If you are building an emerald cut programme, send us the specification and the volume. We will come back with availability, grading and lead times.

Written by

Mira Gems Supply Desk

Manufacturing and sourcing team, Surat

The people who grow, cut and grade the stones. We write about what we see on the production floor and what buyers ask us in the field.