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DIAMOND SIZE CHART


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DIAMOND SIZE CHART

Not sure the size of a particular diamond based on its carat weight? Our Dimond size chart helpful find diamond size.

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Diamond size chart

Want to know the actual size of a 1 carat diamond on a hand? Use our diamond size chart to understand the millimeter (mm) size of each diamond shape.

Round Diamond Sizes

Round MM SizeRound Carat Weight
0.8 mm.0.0025 ct.
1 mm.0.005 ct.
1.1 mm.0.0067 ct.
1.2 mm.0.009 ct.
1.25 mm.0.01 ct.
1.3 mm.0.01 ct.
1.5 mm.0.015 ct.
1.75 mm.0.02 ct.
1.8 mm.0.025 ct.
2 mm.0.03 ct.
2.2 mm.0.04 ct.
2.5 mm.0.06 ct.
2.75 mm.0.08 ct.
3 mm.0.10 ct.
3.25 mm.0.14 ct.
3.5 mm.0.17 ct.
3.75 mm.0.21 ct.
4 mm.0.25 ct.
4.25 mm.0.28 ct.
4.5 mm.0.36 ct.
4.75 mm.0.44 ct.
5.0 mm.0.50 ct.
5.25 mm.0.56 ct.
5.5 mm.0.66 ct.
5.75 mm.0.75 ct.
6 mm.0.84 ct.
6.25 mm.0.93 ct.
6.5 mm.1.00 ct.
6.8 mm.1.25 ct.
Round MM Size Round Carat Weight
7 mm.1.30 ct.
7.3 mm.1.50 ct.
7.5 mm.1.67 ct.
7.75 mm.1.75 ct.
8 mm.2.00 ct.
8.25 mm.2.11 ct.
8.5 mm.2.43 ct.
8.7 mm.2.50 ct.
9 mm.2.75 ct.
9.1 mm.3.00 ct.
9.5 mm.3.35 ct.
9.75 mm.3.61 ct.
10 mm.3.87 ct.
10.25 mm.4.16 ct.
10.5 mm.4.41 ct.
10.75 mm.4.57 ct.
11 mm.4.91 ct.
11.25 mm.5.49 ct.
11.5 mm.5.85 ct.
12 mm.6.84 ct.
12.25 mm.7.26 ct.
12.5 mm.7.36 ct.
12.75 mm.7.52 ct.
13 mm.8.51 ct.
13.5 mm.9.53 ct.
14 mm.10.49 ct.
15 mm.12.89 ct.
16 mm.16.06 ct.
DIAMOND SIZE CHART

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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FAQ for DIAMOND SIZE CHART

What size diamond is considered big?

With the average-sized engagement ring being a 1-carat stone, it’s safe to say anything larger can be considered big. Most people think diamonds are big when they start to reach 2-carats or bigger. However, rings of this size are less common. This is one of the reasons that most people feel 2-carats is a big diamond.

What is an acceptable diamond size for a ring?

In the United States, for example, the national average for an engagement ring is around one carat. In the United Kingdom, it’s 0.6 carats, and in Europe it’s even smaller, hovering at 0.5 carats.

Does the carat of a diamond affect the size?

What Affects Diamond Size. While it is true that carat weight puts a certain limit on a diamond’s dimensions, the factor that affects them the most is the stone’s cut. And even if these two stones weigh the same, the deeper one will appear smaller when set in a ring, while the shallower diamond will seem larger.

The most popular diamond size includes the half-carat diamond (0.50cts.) The reason for this is not only cost, but this diamond typically hits a budget that many people can realistically aspire to.



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