How big is a 8 carat oval diamond?
By HeyGema™ · Updated
In short
A 8 carat oval diamond measures about 16.0 x 11.0 mm. It faces up 6% bigger than a round diamond of the same weight. On a size 6 finger it covers 67% of the width. For the same weight, a round diamond is 12.9 mm.
- 16.0 x 11.0 mm8 carat oval
- 0.63 x 0.43 inthe same in inches
- +6%face-up size vs a round
- 67%of a size 6 finger's width
Carat to mm calculator
About 16.0 x 11.0 mm
An estimate for a well-cut stone. A deep or shallow cut faces up smaller or bigger.
8 carat oval diamond size
A well-cut 8 carat oval diamond measures about 16.0 x 11.0 mm (0.63 x 0.43 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 1.60 grams.
8 carat oval size by length-to-width ratio
The same weight can be long and narrow or short and wide. These are 8 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: 14.8 x 11.9 mm
- Width on the finger: 72% of a size 6 finger
- 1.35:1
- Length x width: 15.4 x 11.4 mm
- Width on the finger: 69% of a size 6 finger
- 1.45:1
- Length x width: 16.0 x 11.0 mm
- Width on the finger: 67% of a size 6 finger
- 1.55:1
- Length x width: 16.5 x 10.7 mm
- Width on the finger: 65% of a size 6 finger
8 carat oval on a finger
- 4
- Finger width: 14.9 mm
- Oval covers: 74%
- 5
- Finger width: 15.7 mm
- Oval covers: 70%
- 6
- Finger width: 16.5 mm
- Oval covers: 67%
- 7
- Finger width: 17.3 mm
- Oval covers: 64%
- 8
- Finger width: 18.1 mm
- Oval covers: 61%
- 9
- Finger width: 18.9 mm
- Oval covers: 58%
Oval sizes near 8 carat
- 5 carat
- Length x width: 13.7 x 9.4 mm
- Round of the same weight: 11.0 mm
- 6 carat
- Length x width: 14.5 x 10.0 mm
- Round of the same weight: 11.7 mm
- 8 (this page)
- Length x width: 16.0 x 11.0 mm
- Round of the same weight: 12.9 mm
- 10 carat
- Length x width: 17.2 x 11.8 mm
- Round of the same weight: 13.9 mm
8 carat in other shapes
Every row is a well-cut diamond of 8 carat. The last column is the face-up size against the oval.
- Round
- Length x width: 12.9 mm
- Against oval: -5%
- Cushion
- Length x width: 11.2 x 11.2 mm
- Against oval: -19%
- Princess
- Length x width: 11.0 x 11.0 mm
- Against oval: -13%
- Emerald cut
- Length x width: 14.0 x 10.0 mm
- Against oval: -2%
- Asscher
- Length x width: 11.0 x 11.0 mm
- Against oval: -20%
- Radiant
- Length x width: 13.0 x 10.0 mm
- Against oval: -8%
- Pear
- Length x width: 17.0 x 11.0 mm
- Against oval: -8%
- Marquise
- Length x width: 20.8 x 10.4 mm
- Against oval: +9%
- Heart
- Length x width: 13.0 x 13.0 mm
- Against oval: -22%
- Trillion
- Length x width: 14.0 x 14.0 mm
- Against oval: -18%
- Baguette
- Length x width: 16.0 x 8.0 mm
- Against oval: -7%