Wondering what a 1 carat Heart diamond looks link on a hand? Our Heart diamond size chart will help you convert millimeter (mm) size to carat size for Heart cut diamonds.
| Heart MM Size |
Heart Weight (ct) |
Black Diamond ct weight (Approx) |
|---|---|---|
| 3.5 mm. | 0.18 | 0.22 |
| 4 mm. | 0.25 | 0.30 |
| 4.25 mm. | 0.28 | 0.34 |
| 4.5 mm. | 0.34 | 0.41 |
| 4.75 mm. | 0.38 | 0.46 |
| 5 mm. | 0.50 | 0.65 |
| 5.5 mm. | 0.61 | 0.79 |
| 6 mm. | 0.75 | 1.00 |
| 6.25 mm. | 0.83 | 1.10 |
| 6.5 mm. | 1.00 | 1.40 |
| 7 mm. | 1.25 | 1.80 |
| 7.5 mm. | 1.50 | 2.10 |
| 8 mm. | 2.00 | 2.80 |
| 8.5 mm. | 2.50 | 3.50 |
| 9 mm. | 3.00 | 4.20 |
| 10 mm. | 3.50 | 4.90 |
| 11 mm. | 4.41 | 6.20 |
| 12 mm. | 5.66 | 8.00 |
| 13 mm. | 7.88 | 11.10 |
| 14 mm. | 9.38 | 13.20 |
| 15 mm. | 10.79 | 15.20 |
| 16 mm. | 13.27 | 18.60 |
| 18 mm. | 15.33 | 21.50 |