Cushion Cut Diamond Size Chart (MM)

Cushion cut diamonds are one of the hardest shapes to predict size based on weight or millimeter measurements. Use our cushion diamond size chart to see how it would look on a hand.

cushion diamond size chart.jpg

  • Round
  • Princess
  • Cushion
  • Oval
  • Emerald
  • Heart
  • Pear
  • Marquise
  • Asscher
  • Radiant

Cushion Diamond Sizes

Cushion MM SizeCushion Carat Weight
4.2 mm. 0.40 ct.
4.9 mm. 0.50 ct.
5.25 mm. 0.75 ct.
5.5 mm. 1.00 ct.
6 mm. 1.25 ct.
6.5 mm. 1.50 ct.
7 mm. 2.00 ct.
7.5 mm. 2.50 ct.
Cushion MM SizeCushion Carat Weight
8 mm. 3.00 ct.
8.5 mm. 3.50 ct.
9 mm. 4.12 ct.
9.5 mm. 5.09 ct.
10 mm. 5.62 ct.
11 mm. 7.44 ct.
12 mm. 9.52 ct.
13 mm. 12.66 ct.

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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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