Professional Rose Cut Diamond Size Chart & Conversion Tool

0.007 - 0.220 cts

ROSE CUT CARAT WEIGHT	ROSE CUT MM SIZE	ROSE CUT DEPTH MM (30-35%)
0.007 - 0.011 ct.	1.30 - 1.45 mm.	0.30 - 0.40 mm.
0.008 - 0.013 ct.	1.40 - 1.55 mm.	0.40 - 0.45 mm.
0.010 - 0.016 ct.	1.50 - 1.70 mm.	0.45 - 0.55 mm.
0.013 - 0.020 ct.	1.75 - 1.85 mm.	0.50 - 0.60 mm.
0.017 - 0.031 ct.	1.90 - 2.10 mm.	0.60 - 0.70 mm.
0.025 - 0.040 ct.	2.15 - 2.35 mm.	0.65 - 0.80 mm.
0.035 - 0.070 ct.	2.40 - 2.70 mm.	0.75 - 0.85 mm.
0.050 - 0.080 ct.	2.80 - 3.20 mm.	0.90 - 1.00 mm.
0.080 - 0.140 ct.	3.30 - 3.65 mm.	1.00 - 1.20 mm.
0.130 - 0.180 ct.	4.20 - 4.35 mm.	2.20 - 2.60 mm.
0.190 - 0.220 ct.	4.40 - 4.55 mm.	4.70 - 4.80 mm.

Ava Diamonds

0.200 - 1.45 cts

ROSE CUT CARAT WEIGHT	ROSE CUT MM SIZE	ROSE CUT DEPTH MM (30-35%)
0.200 - 0.260 ct.	4.40 - 4.55 mm.	1.35 - 1.55 mm.
0.230 - 0.270 ct.	4.60 - 4.80 mm.	1.40 - 1.65 mm.
0.280 - 0.350 ct.	4.85 - 5.20 mm.	1.50 - 1.80 mm.
0.370 - 0.480 ct.	5.30 - 5.60 mm.	1.55 - 1.90 mm.
0.450 - 0.550 ct.	5.60 - 5.80 mm.	1.65 - 2.00 mm.
0.530 - 0.650 ct.	5.85 - 6.10 mm.	1.75 - 2.10 mm.
0.640 - 0.750 ct.	6.20 - 6.35 mm.	1.80 - 2.20 mm.
0.740 - 0.850 ct.	6.40 - 6.65 mm.	1.90 - 2.27 mm.
0.850 - 0.950 ct.	6.80 - 7.40 mm.	2.10 - 2.40 mm.
0.950 - 1.180 ct.	7.45 - 7.70 mm.	2.20 - 2.60 mm.
1.200 - 1.450 ct.	7.80 - 8.40 mm.	2.40 - 2.80 mm.

Ava Diamonds

What are the Ideal Proportions of Rose Cut Diamonds?

A Rose Cut Diamond does not fall into the norm compared to modern cuts, hence its proportions are dependent on personal choice. The above mentioned rose cut diamond size chart assumes the most traditional and sought-after depth of between 30 to 35%. However, there’s plenty of interest for rose cuts with a higher dome by some consumers.

While we focused here on rounded rose cut diamonds there are numerous fancy cut rose cuts that exist today from pear shaped to ovals and hexagons. All of which have their own appeal but uniquely different ct to mm conversions and vice versa.