Know your stone carat size and weight from measurements.
You made a great choice as you decided to go with our simulated cubic zirconia (a great alternative to the Real Diamonds). Now it’s time to pick your favorite shape, mm size, carat weight and more. Click on the the cut below to view its millimeter to carat conversion chart.
Round
| MM Size | Carat Weight |
| 0.8 | 0.0025 |
| 1 | 0.005 |
| 1.12 | 0.0075 |
| 1.15 | 0.0067 |
| 1.25 | 0.01 |
| 1.3 | 0.01 |
| 1.5 | 0.015 |
| 1.75 | 0.02 |
| 1.8 | 0.025 |
| 2 | 0.03 |
| 2.25 | 0.04 |
| 2.5 | 0.06 |
| 2.75 | 0.08 |
| 3 | 0.11 |
| 3.25 | 0.14 |
| 3.5 | 0.17 |
| 3.75 | 0.21 |
| 4 | 0.25 |
| 4.25 | 0.28 |
| 4.5 | 0.36 |
| 4.75 | 0.44 |
| 5 | 0.46 |
| 5.25 | 0.56 |
| 5.5 | 0.66 |
| 5.75 | 0.76 |
| 6 | 0.84 |
| 6.25 | 0.93 |
| 6.5 | 1.03 |
| 6.75 | 1.24 |
| MM Size | Carat Weight |
| 7 | 1.28 |
| 7.25 | 1.49 |
| 7.5 | 1.67 |
| 7.75 | 1.75 |
| 8 | 2.04 |
| 8.25 | 2.11 |
| 8.5 | 2.43 |
| 8.75 | 2.55 |
| 9 | 2.75 |
| 9.25 | 3.05 |
| 9.5 | 3.35 |
| 9.75 | 3.61 |
| 10 | 3.87 |
| 10.25 | 4.16 |
| 10.5 | 4.41 |
| 10.75 | 4.57 |
| 11 | 4.91 |
| 11.25 | 5.49 |
| 11.5 | 5.85 |
| 12 | 6.84 |
| 12.25 | 7.26 |
| 12.5 | 7.36 |
| 12.75 | 7.52 |
| 13 | 8.51 |
| 13.5 | 9.53 |
| 14 | 10.49 |
| 15 | 12.89 |
| 16 | 16.06 |
Princess
| MM Size | Carat Weight |
| 1.5 | 0.015 |
| 1.75 | 0.03 |
| 2 | 0.06 |
| 2.25 | 0.08 |
| 2.5 | 0.1 |
| 2.75 | 0.13 |
| 3 | 0.18 |
| 3.25 | 0.26 |
| 3.5 | 0.29 |
| 3.75 | 0.31 |
| 4 | 0.39 |
| 4.25 | 0.44 |
| 4.5 | 0.56 |
| 4.75 | 0.64 |
| 5 | 0.71 |
| 5.25 | 0.75 |
| 5.5 | 0.99 |
| 5.75 | 1.11 |
| 6 | 1.24 |
| 6.25 | 1.39 |
| MM Size | Carat Weight |
| 6.5 | 1.59 |
| 6.75 | 1.75 |
| 7 | 1.96 |
| 7.25 | 2.01 |
| 7.5 | 2.4 |
| 7.75 | 2.74 |
| 8 | 3.01 |
| 8.25 | 3.24 |
| 8.5 | 3.67 |
| 8.75 | 4.1 |
| 9 | 4.12 |
| 9.5 | 5.09 |
| 9.75 | 5.36 |
| 10 | 5.62 |
| 10.25 | 5.76 |
| 10.5 | 5.99 |
| 11 | 7.44 |
| 11.5 | 9.44 |
| 12 | 9.52 |
Marquise
| MM Size | Carat Weight |
| 3 x 1.5 | 0.025 |
| 3.5 x 1.75 | 0.065 |
| 3.5 x 2 | 0.07 |
| 3.75 x 1.75 | 0.11 |
| 4 x 2 | 0.1 |
| 4.25 x 2.25 | 0.12 |
| 5 x 2.5 | 0.14 |
| 5 x 3 | 0.2 |
| 5.5 x 2.75 | 0.16 |
| 5.5 x 3 | 0.18 |
| 6 x 3 | 0.25 |
| 6.5 x 3 | 0.23 |
| 7 x 3 | 0.3 |
| 7 x 3.5 | .35 |
| 7 x 4 | .34 |
| 7.5 x 3.5 | 0.33 |
| 8 x 4 | 0.47 |
| 9 x 4.5 | 0.71 |
| MM Size | Carat Weight |
| 9 x 5 | 0.76 |
| 9.5 x 2 | 0.85 |
| 10 x 5 | 0.95 |
| 11 x 5.5 | 1.25 |
| 11.5 x 6 | 1.33 |
| 12 x 6 | 1.62 |
| 12 x 6.5 | 1.71 |
| 13 x 6.5 | 2.11 |
| 14 x 7 | 2.48 |
| 15 x 7.5 | 3.09 |
| 14 x 8 | 3 |
| 15 x 7 | 3.12 |
| 15 x 8 | 3.44 |
| 16 x 8 | 3.86 |
| 17 x 8.5 | 4.88 |
| 17.5 x 10 | 5.5 |
| 20 x 8 | 7.08 |
| 20 x 10 | 7.94 |
| 20 x 11 | 9.5 |
Radiant
| MM Size | Carat Weight |
| 4.5 x 3.5 | 0.34 |
| 5 x 3 | 0.31 |
| 6 x 3 | 0.41 |
| 6 x 4 | .60 |
| 6.5 x 4.5 | 0.83 |
| 7 x 5 | 1.14 |
| 7.25 x 5.25 | 1.24 |
| 7.5 x 5.5 | 1.47 |
| 8 x 6 | 1.74 |
| 8.5 x 6.5 | 2.25 |
| 9 x 7 | 2.62 |
| 9.5 x 7.5 | 3.18 |
| 10 x 7 | 3.31 |
| MM Size | Carat Weight |
| 10 x 8 | 3.49 |
| 11 x 9 | 5.05 |
| 11.5 x 10 | 6.45 |
| 12 x 9 | 6.06 |
| 12 x 10 | 6.79 |
| 13 x 9 | 6.54 |
| 13 x 11 | 9.33 |
| 13.5 x 11.5 | 10.19 |
| 14 x 10 | 8.47 |
| 14 x 12 | 12.14 |
| 15 x 11 | 11.48 |
| 16 x 12 | 14.22 |
Cushion
| MM Size | Carat Weight |
| 4 | 0.25 |
| 4.5 | 0.36 |
| 5 | 0.46 |
| 5.25 | 0.56 |
| 5.5 | 0.66 |
| 5.75 | 0.76 |
| 6 | 0.84 |
| 6.25 | 0.93 |
| 6.5 | 1.03 |
| 6.75 | 1.24 |
| 7 | 1.28 |
| 7.5 | 1.67 |
| MM Size | Carat Weight |
| 8 | 2.04 |
| 8.5 | 2.43 |
| 9 | 2.75 |
| 9.5 | 3.35 |
| 10 | 3.87 |
| 10.5 | 4.41 |
| 11 | 4.91 |
| 11.5 | 5.85 |
| 12 | 6.84 |
| 13 | 8.51 |
| 14 | 10.49 |
| 15 | 12.89 |
Pear
| MM Size | Carat Weight |
| 3 x 2 | 0.13 |
| 4 x 2.5 | 0.18 |
| 4 x 3 | 0.21 |
| 5 x 3 | 0.25 |
| 5 x 4 | 0.35 |
| 6 x 4 | 0.39 |
| 6.5 x 4.5 | 0.57 |
| 7 x 5 | 0.71 |
| 8 x 5 | 0.81 |
| 8.5 x 5.5 | 1.08 |
| 8 x 6 | 1.25 |
| 9 x 6 | 1.33 |
| 9 x 7 | 1.75 |
| 10 x 6 | 1.71 |
| 10 x 7 | 1.8 |
| 10 x 8 | 2.46 |
| 11 x 7.50 | 2.61 |
| 11 x 8 | 3 |
| 12 x 7 | 3.12 |
| MM Size | Carat Weight |
| 12 x 8 | 3 |
| 12 x 9 | 3.44 |
| 13 x 8 | 2.98 |
| 14 x 8 | 3.47 |
| 13 x 9 | 4.11 |
| 14 x 9 | 4.25 |
| 15 x 9 | 5.06 |
| 14 x 10 | 5.41 |
| 13 x 11 | 5.65 |
| 15 x 10 | 5.75 |
| 15 x 11 | 7.36 |
| 16 x 9 | 5.86 |
| 16 x 10 | 6.27 |
| 16 x 12 | 8.99 |
| 17 x 10 | 6.46 |
| 18 x 11 | 8.14 |
| 18 x 12 | 9.35 |
| 18 x 13 | 10.21 |
Oval
| MM Size | Carat Weight |
| 4.5 x 3.5 | 0.21 |
| 5 x 3 | 0.21 |
| 5 x 4 | 0.35 |
| 5.5 x 3.5 | 0.33 |
| 6 x 4 | 0.43 |
| 6.5 x 4.5 | 0.65 |
| 6 x 5 | 0.61 |
| 7 x 5 | 0.76 |
| 7.5 x 5.5 | 0.98 |
| 8 x 6 | 1.21 |
| 8.5 x 6.5 | 1.46 |
| 9 x 6 | 1.41 |
| 9 x 7 | 1.86 |
| MM Size | Carat Weight |
| 10 x 8 | 2.54 |
| 10.5 x 8.5 | 2.88 |
| 11 x 9 | 3.85 |
| 12 x 8 | 2.99 |
| 12 x 10 | 5.05 |
| 14 x 10 | 5.81 |
| 13 x 11 | 6.05 |
| 14 x 12 | 8.21 |
| 15 x 12 | 8.76 |
| 16 x 12 | 9.32 |
| 16 x 14 | 11.88 |
| 18 x 13 | 12.86 |
| 20 x 15 | 14.96 |
Heart
| MM Size | Carat Weight |
| 3.5 | 0.18 |
| 4 | 0.25 |
| 4.25 | 0.28 |
| 4.5 | 0.34 |
| 4.75 | 0.38 |
| 5 | 0.44 |
| 5.5 | 0.61 |
| 6 | 0.74 |
| 6.25 | 0.83 |
| 6.5 | 0.93 |
| 7 | 1.13 |
| 7.5 | 1.59 |
| MM Size | Carat Weight |
| 8 | 1.71 |
| 9 | 2.41 |
| 9.5 | 2.9 |
| 10 | 3.16 |
| 11 | 4.41 |
| 12 | 5.66 |
| 13 | 7.88 |
| 14 | 9.38 |
| 15 | 10.79 |
| 16 | 13.27 |
| 18 | 15.33 |
Emerald
| MM Size | Carat Weight |
| 3 x 2 | 0.1 |
| 3.5 x 2 | 0.12 |
| 4 x 2 | 0.15 |
| 4 x 3 | 0.2 |
| 5 x 3 | 0.29 |
| 5.5 x 3.5 | 0.46 |
| 5.5 x 4 | 0.48 |
| 6 x 4 | 0.66 |
| 6.5 x 4.5 | 0.88 |
| 7 x 5 | 1.06 |
| 7.25 x 5.25 | 1.24 |
| 7.5 x 5.5 | 1.45 |
| 8 x 6 | 1.74 |
| 8.5 x 6.5 | 2.17 |
| MM Size | Carat Weight |
| 9 x 7 | 2.62 |
| 9.5 x 7.5 | 3.21 |
| 10 x 7 | 3.01 |
| 10 x 8 | 3.79 |
| 11 x 9 | 5.21 |
| 12 x 8 | 5.34 |
| 12 x 10 | 6 |
| 13 x 9 | 6.38 |
| 14 x 8 | 6.25 |
| 14 x 10 | 8.48 |
| 13 x 11 | 9.13 |
| 14 x 12 | 11.26 |
| 16 x 12 | 14.22 |
Triangle
| MM Size | Carat Weight |
| 2.5 | 0.08 |
| 3 | 0.12 |
| 3.5 | 0.18 |
| 4 | 0.25 |
| 4.25 | 0.32 |
| 4.5 | 0.37 |
| 4.75 | 0.42 |
| 5 | 0.45 |
| 5.25 | 0.53 |
| 5.5 | 0.66 |
| 5.75 | 0.71 |
| 6 | 0.76 |
| 6.25 | 0.86 |
| 6.5 | 0.94 |
| 6.75 | 1.02 |
| MM Size | Carat Weight |
| 7 | 1.11 |
| 7.25 | 1.32 |
| 7.5 | 1.45 |
| 7.75 | 1.69 |
| 8 | 1.79 |
| 8.25 | 1.86 |
| 9 | 2.15 |
| 9.25 | 2.54 |
| 9.75 | 3.25 |
| 10 | 3.52 |
| 11 | 4.74 |
| 12 | 6.03 |
| 13 | 8.12 |
| 14 | 9.83 |
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