How big is a 10 carat moissanite?
By HeyGema™ · Updated
In short
A 10 carat round moissanite measures about 14.3 mm across (0.56 inches), 3% wider than a 10 carat diamond (13.9 mm). An oval of the same weight is 17.8 x 12.2 mm and an emerald cut 15.5 x 11.1 mm.
- 14.3 mmround moissanite, across
- 0.56 inthe same in inches
- 2.00 gweight
- 87%of a size 6 finger's width
Carat to mm calculator
About 14.3 x 14.3 mm
An estimate for a well-cut stone. A deep or shallow cut faces up smaller or bigger.
Round
14.3 mm
Oval
17.8 x 12.2 mm
Cushion
12.4 x 12.4 mm
Princess
12.2 x 12.2 mm
Emerald cut
15.5 x 11.1 mm
Asscher
12.2 x 12.2 mm
Radiant
14.4 x 11.1 mm
Pear
18.9 x 12.2 mm
Marquise
23.1 x 11.5 mm
Heart
14.4 x 14.4 mm
Trillion
15.5 x 15.5 mm
Baguette
17.8 x 8.9 mm
= 5 mm in every picture above
10 carat moissanite size by shape
Face-up measurements of a well-cut 10 carat moissanite. Moissanite is lighter than diamond (3.22 against 3.52), so the same weight gives a bigger stone, 3% wider across.
- Round
- Length x width: 14.3 mm
- In inches: 0.56 in
- Oval
- Length x width: 17.8 x 12.2 mm
- In inches: 0.70 x 0.48 in
- Cushion
- Length x width: 12.4 x 12.4 mm
- In inches: 0.49 x 0.49 in
- Princess
- Length x width: 12.2 x 12.2 mm
- In inches: 0.48 x 0.48 in
- Emerald cut
- Length x width: 15.5 x 11.1 mm
- In inches: 0.61 x 0.44 in
- Asscher
- Length x width: 12.2 x 12.2 mm
- In inches: 0.48 x 0.48 in
- Radiant
- Length x width: 14.4 x 11.1 mm
- In inches: 0.57 x 0.44 in
- Pear
- Length x width: 18.9 x 12.2 mm
- In inches: 0.74 x 0.48 in
- Marquise
- Length x width: 23.1 x 11.5 mm
- In inches: 0.91 x 0.45 in
- Heart
- Length x width: 14.4 x 14.4 mm
- In inches: 0.57 x 0.57 in
- Trillion
- Length x width: 15.5 x 15.5 mm
- In inches: 0.61 x 0.61 in
- Baguette
- Length x width: 17.8 x 8.9 mm
- In inches: 0.70 x 0.35 in
10 carat moissanite against other gems
- Diamond
- Round, 10 carat: 13.9 mm
- Sapphire
- Round, 10 carat: 13.3 mm
- Ruby
- Round, 10 carat: 13.3 mm
- Emerald
- Round, 10 carat: 15.1 mm
- Aquamarine
- Round, 10 carat: 15.2 mm
- Morganite
- Round, 10 carat: 15.0 mm
- Tanzanite
- Round, 10 carat: 14.1 mm
- Topaz
- Round, 10 carat: 13.9 mm
- Moissanite (this page)
- Round, 10 carat: 14.3 mm
10 carat moissanite on a finger
- 4
- Finger width: 14.9 mm
- Round covers: 96%
- Oval covers: 82%
- 5
- Finger width: 15.7 mm
- Round covers: 91%
- Oval covers: 78%
- 6
- Finger width: 16.5 mm
- Round covers: 87%
- Oval covers: 74%
- 7
- Finger width: 17.3 mm
- Round covers: 83%
- Oval covers: 70%
- 8
- Finger width: 18.1 mm
- Round covers: 79%
- Oval covers: 67%
- 9
- Finger width: 18.9 mm
- Round covers: 76%
- Oval covers: 64%
Moissanite at nearby weights
- 5 carat moissanite
- Round diameter: 11.4 mm
- 10 ct (this page)
- Round diameter: 14.3 mm
Questions
A round 10 carat moissanite is about 14.3 mm across. Other shapes are longer than they are wide: an oval is 17.8 x 12.2 mm.
Yes. A round 10 carat moissanite is 3% wider than a 10 carat diamond (13.9 mm).
2.00 grams. A carat is 200 milligrams for every gem.
A round 10 carat moissanite covers 87% of the width of a size 6 finger. Compare it with a ring you have tried on in the finger chart above.