Round Cut Diamond Size Chart (in MM)
Choosing the perfect round cut diamonds requires an understanding of the intricate balance between Carats and Millimeters. If you also wonder how different carat diamonds would look like on your hands, delve into our Round Cut Diamond Size Chart guide, and pick the one that suits you the best.
| Round Cut Diamond Size (MM) | Round Cut Diamond Weight (Carat) |
|---|---|
| 4 mm. | 0.25 ct. |
| 5.0 mm. | 0.50 ct. |
| 5.75 mm. | 0.75 ct. |
| 6.5 mm. | 1.00 ct. |
| 6.8 mm. | 1.25 ct. |
| 7.3 mm. | 1.50 ct. |
| 7.75 mm. | 1.75 ct. |
| 8 mm. | 2.00 ct. |
| 8.7 mm. | 2.50 ct. |
| 9.1 mm. | 3.00 ct. |
| Round Cut Diamond Size (MM) | Round Cut Diamond Weight (Carat) |
|---|---|
| 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 Cut Diamond Size (MM) | Round Cut Diamond Weight (Carat) |
|---|---|
| 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. | 3.50 ct. |
| 10 mm. | 3.87 ct. |
| 10.25 mm. | 4.00 ct. |
| 10.5 mm. | 4.41 ct. |
| 10.75 mm. | 4.50 ct. |
| 11 mm. | 5.00 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. |
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FAQ on Round Cut Diamond Size Chart
How is diamond size measured?
Carat Weight is the Unit that helps measure the diamond size. 1-carat weighs equal to 0.2 grams. Diamond dimensions like length, width, and depth in millimeters help to understand the appearance of a round diamond. The diameter is used to compare the size of two or more diamonds with our diamond size chart.
Are round cut diamonds more expensive?
Round cut diamonds tend to be more expensive because they are highly popular and require more of the rough stone to be cut away during the shaping process. Additionally, their exceptional brilliance and light reflection add to their higher price.
Are round cut diamonds better?
Whether round cut diamonds are better depends on individual preferences. They are popular for their exceptional brilliance and timeless appeal, making them a classic choice for many. However, other cuts like princess, oval, or cushion have their own unique charm and can be equally beautiful. The best choice is the one that matches your personal taste and what you value most in a diamond.
What is a round diamond cut called?
A round diamond cut is known as a “round brilliant cut.” This cut is specifically designed to enhance the diamond’s brilliance and sparkle, making it the most popular and well-known diamond shape.
What is an ideal cut round diamond?
An ideal cut round diamond is meticulously crafted with specific proportions and angles to maximize its brilliance, fire, and sparkle. This precise cutting technique ensures that the diamond reflects and refracts light effectively, resulting in exceptional luminosity and beauty. Such diamonds are highly prized for their superior quality and visual appeal.
What is the cheapest cut of diamond?
The least expensive diamond cuts often include shapes that retain more of the rough diamond during cutting, minimizing wastage. Examples of these cuts include emerald cuts and marquise cuts, which can be more affordable compared to round brilliant cuts due to their simpler cutting process and generally lower demand.
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