What does a 2.5 carat diamond look like on a finger?
By HeyGema™ · Updated
In short
A round 2.5 carat diamond is 8.8 mm across and covers 59% of the width of a size 4 finger, 53% of a size 6 and 48% of a size 8. On a size 6 that is a bold look. An oval of the same weight is 10.9 x 7.5 mm.
- 8.8 mmround, across
- 59%of a size 4 finger
- 53%of a size 6 finger
- 48%of a size 8 finger
Diamond size on a finger
2.5 ct diamond round: 8.8 mm, 53% of a size 6 finger.
The stone sits along the finger, so its width is what shows against the finger. Drawn to scale from the chart on this page.
2.5 carat oval on a size 6 finger
2.5 carat emerald cut on a size 6 finger
2.5 carat diamond on a finger, by ring size and shape
The share of the finger's width the stone covers. Bold means 45% to 59%; statement means 60% and more.
- 4
- Finger width: 14.9 mm
- Round: 59%
- Oval: 50%
- Cushion: 51%
- Emerald cut: 46%
- Princess: 50%
- Pear: 50%
- 5
- Finger width: 15.7 mm
- Round: 56%
- Oval: 48%
- Cushion: 48%
- Emerald cut: 43%
- Princess: 48%
- Pear: 48%
- 6
- Finger width: 16.5 mm
- Round: 53%
- Oval: 45%
- Cushion: 46%
- Emerald cut: 41%
- Princess: 45%
- Pear: 45%
- 7
- Finger width: 17.3 mm
- Round: 51%
- Oval: 43%
- Cushion: 44%
- Emerald cut: 39%
- Princess: 43%
- Pear: 43%
- 8
- Finger width: 18.1 mm
- Round: 48%
- Oval: 41%
- Cushion: 42%
- Emerald cut: 37%
- Princess: 41%
- Pear: 41%
- 9
- Finger width: 18.9 mm
- Round: 46%
- Oval: 39%
- Cushion: 40%
- Emerald cut: 36%
- Princess: 39%
- Pear: 39%
The four looks are our own bands for the share of the finger's width a stone covers: delicate under 30% of the finger's width; classic 30% to 44%; bold 45% to 59%; statement 60% and more. They are a way to read the numbers, not a rule.
2.5 carat in millimeters
A round 2.5 carat diamond is 8.8 mm (0.34 inches) across. For every shape see the 2.5 carat diamond size chart, or open one shape: round, oval, cushion, emerald cut.