How big is a 10 carat oval diamond?
By HeyGema™ · Updated
In short
A 10 carat oval diamond measures about 17.2 x 11.8 mm. It faces up 6% bigger than a round diamond of the same weight. On a size 6 finger it covers 72% of the width. For the same weight, a round diamond is 13.9 mm.
- 17.2 x 11.8 mm10 carat oval
- 0.68 x 0.47 inthe same in inches
- +6%face-up size vs a round
- 72%of a size 6 finger's width
Carat to mm calculator
About 17.2 x 11.8 mm
An estimate for a well-cut stone. A deep or shallow cut faces up smaller or bigger.
10 carat oval diamond size
A well-cut 10 carat oval diamond measures about 17.2 x 11.8 mm (0.68 x 0.47 inches) at a length-to-width ratio of 1.45:1. It faces up 6% bigger than a round diamond of the same weight. It weighs 2.00 grams.
10 carat oval 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.
- 1.25:1
- Length x width: 16.0 x 12.8 mm
- Width on the finger: 77% of a size 6 finger
- 1.35:1
- Length x width: 16.6 x 12.3 mm
- Width on the finger: 75% of a size 6 finger
- 1.45:1
- Length x width: 17.2 x 11.8 mm
- Width on the finger: 72% of a size 6 finger
- 1.55:1
- Length x width: 17.8 x 11.5 mm
- Width on the finger: 70% of a size 6 finger
10 carat oval on a finger
- 4
- Finger width: 14.9 mm
- Oval covers: 80%
- 5
- Finger width: 15.7 mm
- Oval covers: 76%
- 6
- Finger width: 16.5 mm
- Oval covers: 72%
- 7
- Finger width: 17.3 mm
- Oval covers: 68%
- 8
- Finger width: 18.1 mm
- Oval covers: 65%
- 9
- Finger width: 18.9 mm
- Oval covers: 63%
Oval sizes near 10 carat
- 6 carat
- Length x width: 14.5 x 10.0 mm
- Round of the same weight: 11.7 mm
- 8 carat
- Length x width: 16.0 x 11.0 mm
- Round of the same weight: 12.9 mm
- 10 (this page)
- Length x width: 17.2 x 11.8 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 oval.
- Round
- Length x width: 13.9 mm
- Against oval: -5%
- Cushion
- Length x width: 12.1 x 12.1 mm
- Against oval: -19%
- Princess
- Length x width: 11.8 x 11.8 mm
- Against oval: -13%
- Emerald cut
- Length x width: 15.1 x 10.8 mm
- Against oval: -2%
- Asscher
- Length x width: 11.8 x 11.8 mm
- Against oval: -20%
- Radiant
- Length x width: 14.0 x 10.8 mm
- Against oval: -8%
- Pear
- Length x width: 18.3 x 11.8 mm
- Against oval: -8%
- Marquise
- Length x width: 22.4 x 11.2 mm
- Against oval: +9%
- Heart
- Length x width: 14.0 x 14.0 mm
- Against oval: -22%
- Trillion
- Length x width: 15.1 x 15.1 mm
- Against oval: -18%
- Baguette
- Length x width: 17.2 x 8.6 mm
- Against oval: -7%