Diamond size comparison: two stones side by side
By HeyGema™ · Updated
In short
Choose two stones and see them drawn to the same scale, with the face-up difference in percent. For example a 2 carat round is 8.1 mm and a 1.5 carat oval 9.2 x 6.3 mm.
Compare two stones
Stone A
Stone B
1 ct round
6.5 mm
1 ct oval
8.0 x 5.5 mm
Side by side
1 ct round inside 1 ct oval
Stone B faces up 6% bigger than stone A.
Face-up area for a well-cut stone of each shape and gem. Length and width are in the figure labels.
Carat weight comparisons
- 0.25 carat vs 0.5 carat
- 0.3 carat vs 0.5 carat
- 0.5 carat vs 0.75 carat
- 0.5 carat vs 1 carat
- 0.75 carat vs 1 carat
- 1 carat vs 1.25 carat
- 1 carat vs 1.5 carat
- 1.25 carat vs 1.5 carat
- 1 carat vs 2 carat
- 1.5 carat vs 2 carat
- 1.5 carat vs 2.5 carat
- 2 carat vs 2.5 carat
- 2 carat vs 3 carat
- 2.5 carat vs 3 carat
- 1 carat vs 3 carat
- 3 carat vs 4 carat
- 3 carat vs 5 carat
- 4 carat vs 5 carat
- 2 carat vs 5 carat
- 1 carat vs 5 carat
- 5 carat vs 10 carat
Shape comparisons
- Round vs oval diamond size
- Round vs cushion diamond size
- Round vs princess diamond size
- Round vs emerald cut diamond size
- Round vs pear diamond size
- Round vs marquise diamond size
- Round vs radiant diamond size
- Round vs asscher diamond size
- Oval vs cushion diamond size
- Oval vs pear diamond size
- Oval vs emerald cut diamond size
- Oval vs marquise diamond size
- Cushion vs princess diamond size
- Cushion vs emerald cut diamond size
- Cushion vs radiant diamond size
- Asscher vs emerald cut diamond size
- Radiant vs emerald cut diamond size
- Princess vs radiant diamond size
- Pear vs marquise diamond size
- Heart vs pear diamond size
Gem comparisons
Questions
Compare the millimeters, not only the carats. The tool draws both stones to one scale and shows how much bigger one faces up.
A round 2 carat (8.1 mm) is 26% wider and 59% larger face-up than a round 1 carat (6.5 mm).