How big is a 6 carat round diamond?
By HeyGema™ · Updated
In short
A 6 carat round diamond measures about 11.7 mm. On a size 6 finger it covers 71% of the width. For the same weight, a round diamond is 11.7 mm.
- 11.7 mm6 carat round
- 0.46 inthe same in inches
- referenceface-up size vs a round
- 71%of a size 6 finger's width
Carat to mm calculator
About 11.7 x 11.7 mm
An estimate for a well-cut stone. A deep or shallow cut faces up smaller or bigger.
6 ct round
11.7 mm
6 ct round
11.7 mm
Side by side
6 ct round inside 6 ct round
6 carat round diamond size
A well-cut 6 carat round diamond measures about 11.7 mm (0.46 inches) at a length-to-width ratio of 1.00:1. It weighs 1.20 grams.
6 carat round on a finger
- 4
- Finger width: 14.9 mm
- Round covers: 79%
- 5
- Finger width: 15.7 mm
- Round covers: 75%
- 6
- Finger width: 16.5 mm
- Round covers: 71%
- 7
- Finger width: 17.3 mm
- Round covers: 68%
- 8
- Finger width: 18.1 mm
- Round covers: 65%
- 9
- Finger width: 18.9 mm
- Round covers: 62%
Round sizes near 6 carat
- 4 carat
- Length x width: 10.2 mm
- Round of the same weight: 10.2 mm
- 5 carat
- Length x width: 11.0 mm
- Round of the same weight: 11.0 mm
- 6 (this page)
- Length x width: 11.7 mm
- Round of the same weight: 11.7 mm
- 8 carat
- Length x width: 12.9 mm
- Round of the same weight: 12.9 mm
- 10 carat
- Length x width: 13.9 mm
- Round of the same weight: 13.9 mm
6 carat in other shapes
Every row is a well-cut diamond of 6 carat. The last column is the face-up size against the round.
- Oval
- Length x width: 14.5 x 10.0 mm
- Against round: +6%
- Cushion
- Length x width: 10.2 x 10.2 mm
- Against round: -14%
- Princess
- Length x width: 10.0 x 10.0 mm
- Against round: -8%
- Emerald cut
- Length x width: 12.7 x 9.1 mm
- Against round: +4%
- Asscher
- Length x width: 10.0 x 10.0 mm
- Against round: -16%
- Radiant
- Length x width: 11.8 x 9.1 mm
- Against round: -2%
- Pear
- Length x width: 15.4 x 10.0 mm
- Against round: -3%
- Marquise
- Length x width: 18.9 x 9.4 mm
- Against round: +16%
- Heart
- Length x width: 11.8 x 11.8 mm
- Against round: -17%
- Trillion
- Length x width: 12.7 x 12.7 mm
- Against round: -14%
- Baguette
- Length x width: 14.5 x 7.3 mm
- Against round: -2%
Questions
A 6 carat round diamond is about 11.7 mm at the usual 1.00:1 ratio.
A 6 carat round diamond is about 0.46 inches across.
There is no rule. The stone is wider than most fingers. Compare it with a ring you have tried on in the finger chart above.
Yes. A lab grown diamond has the same density as a mined one, so it measures the same for the same weight.