Professional Heart Diamond Size Chart & Conversion Tool
0.18-5.20 cts (Excellent Cut)
Copyright © AVA DIAMONDS
| HEART SHAPE CARAT WEIGHT | HEART SHAPE MM SIZE (RATIO of 0.95 - 1.02) EXCELLENT CUT |
|---|---|
| 0.18 - 0.21 ct. | 3.50 - 3.70 mm. |
| 0.23 - 0.26 ct. | 3.80 - 4.10 mm. |
| 0.27 - 0.29 ct. | 4.20 - 4.40 mm. |
| 0.30 - 0.38 ct. | 4.50 - 4.70 mm. |
| 0.40 - 0.45 ct. | 4.90 - 5.10 mm. |
| 0.50 - 0.57 ct. | 5.20 - 5.50 mm. |
| 0.60 - 0.65 ct. | 5.60 - 5.70 mm. |
| 0.70 - 0.75 ct. | 5.80 - 6.10 mm. |
| 0.80 - 0.85 ct. | 6.10 - 6.30 mm. |
| 0.90 - 0.95 ct. | 6.20 - 6.50 mm. |
| 1.00 - 1.10 ct. | 6.40 - 6.70 mm. |
| 1.20 - 1.30 ct. | 7.00 - 7.40 mm. |
| 1.50 - 1.60 ct. | 7.50 - 7.90 mm. |
| 1.70 - 1.80 ct. | 8.00 - 8.20 mm. |
| 2.00 - 2.20 ct. | 8.30 - 8.60 mm. |
| 2.40 - 2.60 ct. | 8.40 - 8.90 mm. |
| 2.70 - 2.85 ct. | 8.80 - 9.30 mm. |
| 3.00 - 3.20 ct. | 9.30 - 9.80 mm. |
| 3.40 - 3.60 ct. | 9.50 - 9.90 mm. |
| 4.00 - 4.20 ct. | 9.80 - 10.00 mm. |
| 4.40 - 4.60 ct. | 9.90 - 10.30mm. |
| 5.00 - 5.20 ct. | 10.50 - 11.10 mm. |
Ava Diamonds
0.17 - 2.20 cts (Good Cut)
Copyright © AVA DIAMONDS
| HEART SHAPE CARAT WEIGHT | HEART SHAPE MM SIZE (RATIO of 0.90 - 1.05) VERY GOOD CUT |
|---|---|
| 0.17 - 0.21 ct. | 3.30 - 3.70 mm. |
| 0.23 - 0.26 ct. | 3.60 - 3.90 mm. |
| 0.27 - 0.29 ct. | 4.00 - 4.30 mm. |
| 0.30 - 0.38 ct. | 4.20 - 4.60 mm. |
| 0.40 - 0.45 ct. | 4.60 - 4.90 mm. |
| 0.50 - 0.57 ct. | 4.90 - 5.30 mm. |
| 0.60 - 0.65 ct. | 5.30 - 5.70 mm. |
| 0.70 - 0.75 ct. | 5.50 - 5.80 mm. |
| 0.80 - 0.85 ct. | 5.80 - 6.00 mm. |
| 0.90 - 0.95 ct. | 5.90 - 6.30 mm. |
| 1.00 - 1.10 ct. | 6.10 - 6.50 mm. |
| 1.20 - 1.30 ct. | 6.60 - 7.00 mm. |
| 1.50 - 1.60 ct. | 7.10 - 8.50 mm. |
| 1.70 - 1.80 ct. | 5.00 - 5.30 mm. |
| 2.00 - 2.20 ct. | 7.90 - 8.20 mm. |
| 2.40 - 2.60 ct. | 8.00 - 8.50 mm. |
| 2.70 - 2.85 ct. | 8.40 - 9.00 mm |
| 3.00 - 3.20 ct. | 8.90 - 9.30 mm. |
| 3.40 - 3.60 ct. | 9.00 - 9.40 mm. |
| 4.00 - 4.20 ct. | 9.30 - 9.50 mm. |
| 4.40 - 4.60 ct. | 9.40 - 9.80 mm. |
| 5.00 - 5.20 ct. | 9.80 - 10.80 mm. |
Ava Diamonds
What are the Ideal Proportions of a Heart Cut Diamond?
You will find it difficult to find a shape that is more reliant on the quality of its symmetry than the Heart Shaped Diamond. After all, an asymmetrical shape, will simply not look like a convincing heart. Each half of the stone should be as equal as possible, as well as have the elegance of rounded shoulders that stem from it being a modified brilliant round cut.
Recommended Dpeth and Table for Heart Shapes
| EXCELLENT | VERY GOOD | GOOD | |
|---|---|---|---|
Table - % | 53% - 63% | 52% or 64% - 65% | 51% or 66% - 68% |
Depth - % | 58% - 62% | 56% - 57.9% or 62.1% - 66% | 53% - 55.9% or 66.1% - 71% |
Girdle | Very Thin to - | Slightly Thick | Very Thin to Thick |
Culet | None | Very Small | Small |
What is the Recommended Length to Width Ratio in Heart Cut Diamonds?
Generally speaking, when it comes to heart shapes, the closer you get to that sweet spot around the 1.00 or slightly below it, the btter chances you will have of having a superior stone. 1.00 of course. meaning that its length and width are near identical.
The lower you get from the sweet spot of 0.95 – 1.02 the more full, or chubby the stone will appear. On the other hand, the further you get from it, the more stretched of an appearance the shape will turn out to have.
| EXCELLENT | VERY GOOD | GOOD | |
|---|---|---|---|
| Length To Width Ratio | 0.95 - 1.02 | 0.89 - 0.94 or 1.03 - 1.05 | 0.83 - 0.87 or 1.06 - 1.10 |
