Heart Cut Diamond Size Chart (MM)
The ideal cut for a Heart shaped diamond is a square ratio of 1:1 for length and width. The chart below will help you convert the millimeter and carat weights for a heart cut diamond.
Heart Diamond Sizes
| Heart MM Size | Heart Carat Weight |
|---|---|
| 3.5 mm. | 0.18 ct. |
| 4 mm. | 0.25 ct. |
| 4.25 mm. | 0.28 ct. |
| 4.5 mm. | 0.34 ct. |
| 4.75 mm. | 0.38 ct. |
| 5 mm. | 0.50 ct. |
| 5.5 mm. | 0.61 ct. |
| 6 mm. | 0.75 ct. |
| 6.25 mm. | 0.83 ct. |
| 6.5 mm. | 1.00 ct. |
| 7 mm. | 1.25 ct. |
| 7.5 mm. | 1.50 ct. |
| Heart MM Size | Heart Carat Weight |
|---|---|
| 8 mm. | 2.00 ct. |
| 8.5 mm. | 2.50 ct. |
| 9 mm. | 3.00 ct. |
| 10 mm. | 3.50 ct. |
| 11 mm. | 4.41 ct. |
| 12 mm. | 5.66 ct. |
| 13 mm. | 7.88 ct. |
| 14 mm. | 9.38 ct. |
| 15 mm. | 10.79 ct. |
| 16 mm. | 13.27 ct. |
| 18 mm. | 15.33 ct. |
Diamond Education
Understanding the 4 C's of a diamond (color, cut, carat, clarity) and the factors that impact its quality, price and value.