How many carats is a 9 mm moissanite?

By HeyGema™ · Updated

In short

A 9 mm round moissanite is labeled 2.72 carat, its diamond equivalent weight (DEW). On a scale it weighs about 2.49 carat, because moissanite is lighter than diamond.

Carat to mm calculator

About 2.49 carat

An estimate for a well-cut stone. A deep or shallow cut faces up smaller or bigger.

9 mm moissanite by shape

For shapes that are longer than they are wide, the long side is 9 mm and the width follows the usual ratio.

Round
Size: 9 mm
DEW: 2.72 ct
True weight: 2.49 ct
Oval
Size: 9 mm x 6.2 mm
DEW: 1.43 ct
True weight: 1.31 ct
Cushion
Size: 9 mm x 9.0 mm
DEW: 4.15 ct
True weight: 3.8 ct
Princess
Size: 9 mm x 9.0 mm
DEW: 4.38 ct
True weight: 4.01 ct
Emerald cut
Size: 9 mm x 6.4 mm
DEW: 2.13 ct
True weight: 1.95 ct
Asscher
Size: 9 mm x 9.0 mm
DEW: 4.38 ct
True weight: 4.01 ct
Radiant
Size: 9 mm x 6.9 mm
DEW: 2.65 ct
True weight: 2.42 ct
Pear
Size: 9 mm x 5.8 mm
DEW: 1.18 ct
True weight: 1.08 ct
Marquise
Size: 9 mm x 4.5 mm
DEW: 0.65 ct
True weight: 0.59 ct
Heart
Size: 9 mm x 9.0 mm
DEW: 2.65 ct
True weight: 2.42 ct
Trillion
Size: 9 mm x 9.0 mm
DEW: 2.13 ct
True weight: 1.95 ct
Baguette
Size: 9 mm x 4.5 mm
DEW: 1.42 ct
True weight: 1.3 ct

Nearby moissanite sizes

8.5 mm
DEW: 2.29 ct
True weight: 2.09 ct
9 mm (this page)
DEW: 2.72 ct
True weight: 2.49 ct
9.5 mm
DEW: 3.2 ct
True weight: 2.93 ct

Questions

A round 9 mm moissanite is 2.72 carat DEW (the weight of a diamond that size) and about 2.49 carat on a scale.
A 9 mm moissanite is the same width as a 9 mm diamond, which weighs 2.72 carat. The moissanite weighs less.
9 mm is 0.35 inches.

More size charts