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_size_chart.jpg

  • Round
  • Princess
  • Cushion
  • Oval
  • Emerald
  • Heart
  • Pear
  • Marquise
  • Asscher
  • Radiant
Heart MM SizeHeart 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 SizeHeart 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.

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