How big is a 10 carat cushion cut diamond?
By HeyGema™ · Updated
In short
A 10 carat cushion cut diamond measures about 12.1 x 12.1 mm. It faces up 14% smaller than a round diamond of the same weight. On a size 6 finger it covers 73% of the width. For the same weight, a round diamond is 13.9 mm.
- 12.1 x 12.1 mm10 carat cushion
- 0.47 x 0.47 inthe same in inches
- -14%face-up size vs a round
- 73%of a size 6 finger's width
Carat to mm calculator
About 12.1 x 12.1 mm
An estimate for a well-cut stone. A deep or shallow cut faces up smaller or bigger.
10 carat cushion diamond size
A well-cut 10 carat cushion cut diamond measures about 12.1 x 12.1 mm (0.47 x 0.47 inches) at a length-to-width ratio of 1.00:1. It faces up 14% smaller than a round diamond of the same weight. It weighs 2.00 grams.
10 carat cushion size by length-to-width ratio
The same weight can be long and narrow or short and wide. These are 10 carat sizes at each ratio. A longer ratio runs the stone along the finger and makes it look slimmer. The face-up area stays almost the same.
- 1.00:1
- Length x width: 12.1 x 12.1 mm
- Width on the finger: 73% of a size 6 finger
- 1.10:1
- Length x width: 12.7 x 11.5 mm
- Width on the finger: 70% of a size 6 finger
- 1.20:1
- Length x width: 13.2 x 11.0 mm
- Width on the finger: 67% of a size 6 finger
- 1.30:1
- Length x width: 13.8 x 10.6 mm
- Width on the finger: 64% of a size 6 finger
10 carat cushion on a finger
- 4
- Finger width: 14.9 mm
- Cushion covers: 81%
- 5
- Finger width: 15.7 mm
- Cushion covers: 77%
- 6
- Finger width: 16.5 mm
- Cushion covers: 73%
- 7
- Finger width: 17.3 mm
- Cushion covers: 70%
- 8
- Finger width: 18.1 mm
- Cushion covers: 67%
- 9
- Finger width: 18.9 mm
- Cushion covers: 64%
Cushion sizes near 10 carat
- 6 carat
- Length x width: 10.2 x 10.2 mm
- Round of the same weight: 11.7 mm
- 8 carat
- Length x width: 11.2 x 11.2 mm
- Round of the same weight: 12.9 mm
- 10 (this page)
- Length x width: 12.1 x 12.1 mm
- Round of the same weight: 13.9 mm
10 carat in other shapes
Every row is a well-cut diamond of 10 carat. The last column is the face-up size against the cushion.
- Round
- Length x width: 13.9 mm
- Against cushion: +16%
- Oval
- Length x width: 17.2 x 11.8 mm
- Against cushion: +23%
- Princess
- Length x width: 11.8 x 11.8 mm
- Against cushion: +7%
- Emerald cut
- Length x width: 15.1 x 10.8 mm
- Against cushion: +21%
- Asscher
- Length x width: 11.8 x 11.8 mm
- Against cushion: -2%
- Radiant
- Length x width: 14.0 x 10.8 mm
- Against cushion: +14%
- Pear
- Length x width: 18.3 x 11.8 mm
- Against cushion: +13%
- Marquise
- Length x width: 22.4 x 11.2 mm
- Against cushion: +35%
- Heart
- Length x width: 14.0 x 14.0 mm
- Against cushion: -4%
- Trillion
- Length x width: 15.1 x 15.1 mm
- Against cushion: +1%
- Baguette
- Length x width: 17.2 x 8.6 mm
- Against cushion: +14%