A heart-shaped diamond is unique and produces a lot of sparkle like a round-cut diamond. It can be difficult to cut, but when done well, its french-tip pointed end augments the brilliance and shine created by its 58 facets. It is a popular cut for engagement rings and even pendants. Our stone sizing chart below shows the standard sizes and matching carat weights for heart-cut diamonds to help you find your perfect fit.

 

 

 

For actual stone sizes and measurements, you can download our Heart Stone Sizing Guide.

 

 

Heart Size (mm)

Heart Carat Weight

Heart Size (mm)

Heart Carat Weight

3.5 mm.

0.18 ct.

8 mm.

2.00 ct.

4 mm.

0.25 ct.

8.5 mm.

2.50 ct.

4.25 mm.

0.28 ct.

9 mm.

3.00 ct.

4.5 mm.

0.34 ct.

10 mm.

3.50 ct.

4.75 mm.

0.38 ct.

11 mm.

4.41 ct.

5 mm.

0.50 ct.

12 mm.

5.66 ct.

5.5 mm.

0.61 ct.

13 mm.

7.88 ct.

6 mm.

0.75 ct.

14 mm.

9.38 ct.

6.25 mm.

0.83 ct.

15 mm.

10.79 ct.

6.5 mm.

1.00 ct.

16 mm.

13.27 ct.

7 mm.

1.25 ct.

18 mm.

15.33 ct.

7.5 mm.

1.50 ct.