Professional Carre Cut Diamond Size Chart

CT to MM and MM to Carat Carre Cut Size Comparison

The Carre Cut Diamond is a lesser known member of the distinct step cut family of diamonds, bearing a striking resemblance to the Asscher Cut, with the unique differences being its four corners and square look, which creates a stunning x pattern. It is often used implemented in art deco inspired engagement rings

Below you will find an easy to implement Carre Shaped Diamond CT to MM / MM to CT Conversion Tool. If you’ve ever wondered what a 3 ct Carre would be in mm, you will be able to do all that and much more in a matter of seconds.

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Carre Cut Diamond Conversion Chart From CT to MM / MM to CT

0.05 - 1.05 cts

CARRE CUT CARAT WEIGHT	CARRE CUT MM SIZE
0.05 - 0.06 ct.	1.90 - 2.00 mm.
0.06 - 0.07 ct.	2.10 - 2.20 mm.
0.08 - 0.09 ct.	2.30 - 2.40 mm.
0.10 - 0.12 ct.	2.50 - 2.60 mm.
0.13 - 0.14 ct.	2.70 - 2.80 mm.
0.15 - 0.17 ct.	2.90 - 3.00 mm.
0.18 - 0.21 ct.	3.10 - 3.20 mm.
0,22 - 0.25 ct.	3.30 - 3.40 mm.
0.25 - 0.29 ct.	3.50 - 3.60 mm.
0,30 - 0.36 ct.	3.70 - 3.80 mm.
0.37 - 0.42 ct.	3.90 - 4.00 mm.
0.42 - 0.47 ct.	4.10 - 4.20 mm.
0.47 - 0.53 ct.	4.30 - 4.40 mm.
0.55 - 0.60 ct.	4.50 - 4.60 mm.
0.60 - 0.65 ct.	4.70 - 4.80 mm.
0.70 - 0.75 ct.	4.90 - 5.00 mm.
0.80 - 0.85 ct.	5.10 - 5.20 mm.
0.90 - 0.98 ct.	5.30 - 5.40 mm.
1.00 - 1.05 ct.	5.50 - 5.60 mm.

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Carre Cut Diamond on Hand

A carre cut diamond stands out with its crisp geometric presence the moment it sits on the finger. The perfectly square outline and sharp, uncut corners give it a clean, architectural look that feels structured and vintage inspired, quite different from the softer rounded shapes or beveled styles like the Asscher.Its step cut faceting creates bold, mirror like reflections that glide across the stone in large planes rather than producing scattered sparkles.

The Carre square cut provides a calm yet striking hall of mirrors effect that highlights the cut’s precise symmetry. The balanced proportions deliver solid coverage without feeling heavy, and the sharp corners add a defined edge that makes the diamond appear crisp and substantial in real life.

If you’re curious how a carre cut diamond would look like on a real finger the following image should prove helpful, with a variety of weights from small to large in order to gauge the scale and presence.

Things to Consider in Carre Cut Diamonds

The two most important things to consider when dealing with Carre Shaped diamonds are:

They are very unforgiving with it comes to imperfections. When dealing with Carre Shapes, you should opt for the highest possible clarity and color you can afford, because it has an open and clear step cut visibility, which is also part of its charm.
Due to its 90-degree corners, it is highly recommended to use a setting that will prevent it from chipping, as well as a reliable, which will most likely recommend Bezel settings as the safest choice.