Marquise Diamond Size Chart

Round

Princess

Emerald

Oval

Marquise

Pear

Cushion

Heart

Tapered & Bugget

Tapered & Bugget

Trillion

Length × Width (mm)	Size (Carats)	Diamonds per Carat
2.50 × 1.25 mm	0.025 ct	40
3.00 × 1.50 mm	0.04 ct	25
3.50 × 1.75 mm	0.06 ct	17
3.50 × 2.00 mm	0.07 ct	14
4.00 × 2.00 mm	0.10 ct	10
4.25 × 2.25 mm	0.12 ct	8
4.50 × 2.50 mm	0.14 ct	7
5.00 × 2.50 mm	0.15 ct	6
5.00 × 3.00 mm	0.20 ct	5
6.00 × 3.00 mm	0.25 ct	4
6.00 × 3.50 mm	0.30 ct	3
7.00 × 3.50 mm	0.38 ct	2.63
7.00 × 4.00 mm	0.40 ct	2.50
8.00 × 4.00 mm	0.50 ct	2
9.00 × 4.50 mm	0.75 ct	1.33
10.00 × 5.00 mm	1 ct	1
11.00 × 5.50 mm	1.50 ct	0.67
12.00 × 6.00 mm	2 ct	0.50
13.00 × 6.50 mm	2.50 ct	0.40
14.00 × 7.00 mm	3 ct	0.33
14.00 × 7.50 mm	3.50 ct	0.29
16.00 × 8.00 mm	4 ct	0.25
16.00 × 8.50 mm	5 ct	0.20

← Back to Diamond Size Guide