3 Carat · Emerald
3 carat emerald lab-grown diamond.
Approximately 9.3 × 7.5 mm, cut to the Montare floor — VVS, D/E, Triple Excellent, IGI certified.
A 3 carat emerald lab-grown diamond is one of the most-searched stones we make — and one of the clearest demonstrations of what lab-grown supply changed. Here is what the size actually looks like, how the emerald cut wears, and what it costs when you buy it from the workshop instead of a retail floor.
What a 3 carat emerald looks like
Carat measures weight, not width. At three carats a emerald reads as a true centre stone on an average ring finger — the point where presence and proportion meet.
The emerald character
Step-cut rather than brilliant — a hall of mirrors instead of scintillating sparkle. It is the most revealing shape, so it demands the highest clarity. Montare's VVS floor is exactly what an emerald cut needs.
The Montare standard
Every 3 carat emerald we set holds the same floor: VVS1–VVS2 clarity, D or E colour, Triple Excellent cut, IGI certified. Not a premium upgrade — the baseline. Cut is the variable that decides how a diamond actually looks, which is why we will not drop below Triple Excellent for any saving. Read why Triple Excellent matters.
Why it costs less than you would expect
A 3 carat lab-grown emerald is physically and chemically identical to a mined stone of the same grade — and at the same specification it costs dramatically less, with none of the extraction. Working factory-direct from our Toronto workshop removes the retail markup on top of that. See where the retail markup actually goes.
Keep exploring
- Emerald engagement ring settings →
- How much a 3-carat lab-grown diamond costs →
- Lab-grown engagement rings in Canada →
Common questions
How big is a 3 carat emerald lab-grown diamond?
A 3 carat emerald diamond measures roughly 9.3 × 7.5 mm face-up. Carat is a measure of weight, not size, so the visible footprint depends on shape — elongated cuts look larger on the hand than their carat weight suggests.
How much is a 3 carat lab-grown emerald diamond?
Far less than its mined equivalent and far less than retail. An identically graded stone that runs $11,000 and up in a jewellery store costs a fraction of that factory-direct from Montare. Model your exact configuration on our pricing tool.
Is a 3 carat emerald diamond too big?
Three carats is the Montare floor because below it a centre stone starts to read tentative on most hands. A 3 carat emerald is a confident size — present without tipping into costume.
Are Montare's 3 carat emerald diamonds certified?
Yes — every stone is IGI certified at VVS1–VVS2 clarity, D/E colour and Triple Excellent cut, with the report number inscribed on the diamond. We will not set below that floor.