How big is a 0.33 carat princess cut diamond?
By HeyGema™ · Updated
In short
A 0.33 carat princess cut diamond measures about 3.8 x 3.8 mm. It faces up 8% smaller than a round diamond of the same weight. On a size 6 finger it covers 23% of the width. For the same weight, a round diamond is 4.5 mm.
- 3.8 x 3.8 mm0.33 carat princess
- 0.15 x 0.15 inthe same in inches
- -8%face-up size vs a round
- 23%of a size 6 finger's width
Carat to mm calculator
About 3.8 x 3.8 mm
An estimate for a well-cut stone. A deep or shallow cut faces up smaller or bigger.
0.33 ct princess
3.8 x 3.8 mm
0.33 ct round
4.5 mm
Side by side
0.33 ct princess inside 0.33 ct round
0.33 carat princess diamond size
A well-cut 0.33 carat princess cut diamond measures about 3.8 x 3.8 mm (0.15 x 0.15 inches) at a length-to-width ratio of 1.00:1. It faces up 8% smaller than a round diamond of the same weight. It weighs 0.066 grams.
0.33 carat princess on a finger
- 4
- Finger width: 14.9 mm
- Princess covers: 26%
- 5
- Finger width: 15.7 mm
- Princess covers: 24%
- 6
- Finger width: 16.5 mm
- Princess covers: 23%
- 7
- Finger width: 17.3 mm
- Princess covers: 22%
- 8
- Finger width: 18.1 mm
- Princess covers: 21%
- 9
- Finger width: 18.9 mm
- Princess covers: 20%
Princess sizes near 0.33 carat
- 0.25 carat
- Length x width: 3.5 x 3.5 mm
- Round of the same weight: 4.1 mm
- 0.33 (this page)
- Length x width: 3.8 x 3.8 mm
- Round of the same weight: 4.5 mm
- 0.5 carat
- Length x width: 4.4 x 4.4 mm
- Round of the same weight: 5.1 mm
- 0.75 carat
- Length x width: 5.0 x 5.0 mm
- Round of the same weight: 5.9 mm
0.33 carat in other shapes
Every row is a well-cut diamond of 0.33 carat. The last column is the face-up size against the princess.
- Round
- Length x width: 4.5 mm
- Against princess: +9%
- Oval
- Length x width: 5.5 x 3.8 mm
- Against princess: +15%
- Cushion
- Length x width: 3.9 x 3.9 mm
- Against princess: -6%
- Emerald cut
- Length x width: 4.8 x 3.5 mm
- Against princess: +13%
- Asscher
- Length x width: 3.8 x 3.8 mm
- Against princess: -8%
- Radiant
- Length x width: 4.5 x 3.5 mm
- Against princess: +6%
- Pear
- Length x width: 5.9 x 3.8 mm
- Against princess: +6%
- Marquise
- Length x width: 7.2 x 3.6 mm
- Against princess: +26%
- Heart
- Length x width: 4.5 x 4.5 mm
- Against princess: -10%
- Trillion
- Length x width: 4.8 x 4.8 mm
- Against princess: -6%
- Baguette
- Length x width: 5.5 x 2.76 mm
- Against princess: +7%
Questions
A 0.33 carat princess cut diamond is about 3.8 x 3.8 mm at the usual 1.00:1 ratio.
No. Face-up, a 0.33 carat princess is 8% smaller than a 0.33 carat round (4.5 mm).
There is no rule. The stone is 26% of the width of a size 4 finger and 21% of a size 8. 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.