
| Round MM Size | Round 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. |
| 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. |

| Princess MM Size | Princess Carat Weight |
| 1.5 mm. | 0.015 ct. |
| 1.75 mm. | 0.03 ct. |
| 2 mm. | 0.06 ct. |
| 2.25 mm. | 0.08 ct. |
| 2.5 mm. | 0.10 ct. |
| 2.75 mm. | 0.13 ct. |
| 3 mm. | 0.18 ct. |
| 3.25 mm. | 0.25 ct. |
| 3.5 mm. | 0.29 ct. |
| 3.75 mm. | 0.31 ct. |
| 4 mm. | 0.39 ct. |
| 4.25 mm. | 0.44 ct. |
| 4.5 mm. | 0.50 ct. |
| 4.75 mm. | 0.64 ct. |
| 5 mm. | 0.75 ct. |
| 5.25 mm. | 0.90 ct. |
| 5.5 mm. | 1.00 ct. |
| 5.75 mm. | 1.11 ct. |
| 6 mm. | 1.25 ct. |
| 6.25 mm. | 1.39 ct. |
| 6.5 mm. | 1.50 ct. |
| 6.75 mm. | 1.75 ct. |
| 7 mm. | 2.00 ct. |
| 7.25 mm. | 2.01 ct. |
| 7.5 mm. | 2.50 ct. |
| 7.75 mm. | 2.74 ct. |
| 8 mm. | 3.00 ct. |
| 8.25 mm. | 3.24 ct. |
| 8.5 mm. | 3.50 ct. |
| 8.75 mm. | 4.00 ct. |
| 9.25 mm. | 4.50 ct. |
| 9.5 mm. | 5.00 ct. |
| 9.75 mm. | 5.36 ct. |
| 10 mm. | 5.62 ct. |
| 10.25 mm. | 5.76 ct. |
| 10.5 mm. | 5.99 ct. |
| 11 mm. | 7.44 ct. |
| 11.5 mm. | 9.44 ct. |
| 12 mm. | 9.52 ct. |

| Cushion MM Size | Cushion Carat Weight |
| 3.25 mm. | 0.25 ct. |
| 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. |
| 6.75 mm. | 1.75 ct. |
| 7 mm. | 2.00 ct. |
| 7.5 mm. | 2.50 ct. |
| 8 mm. | 3.00 ct. |
| 8.5 mm. | 3.50 ct. |
| 9 mm. | 4.00 ct. |
| 9.3 mm. | 4.50 ct. |
| 9.5 mm. | 5.00 ct. |
| 10 mm. | 5.62 ct. |
| 11 mm. | 7.44 ct. |
| 12 mm. | 9.52 ct. |
| 13 mm. | 12.66 ct. |

| Oval MM Size | Oval Carat Weight |
| 3.6×2.7 mm. | 0.10 ct. |
| 4×3 mm. | 0.15 ct. |
| 4.5×3.5 mm. | 0.20 ct. |
| 5×3 mm. | 0.25 ct. |
| 5.5×3.5 mm. | 0.33 ct. |
| 5×4 mm. | 0.35 ct. |
| 6×4 mm. | 0.50 ct. |
| 6×5 mm. | 0.61 ct. |
| 6.5×4.5 mm. | 0.65 ct. |
| 7×5 mm. | 0.75 ct. |
| 7.7×5.7 mm. | 1.00 ct. |
| 8×6 mm. | 1.25 ct. |
| 9×6 mm. | 1.41 ct. |
| 8.5×6.5 mm. | 1.50 ct. |
| 9×6.5 mm. | 1.75 ct. |
| 9×7 mm. | 2.00 ct. |
| 10×8 mm. | 2.50 ct. |
| 10.5×8.5 mm. | 2.88 ct. |
| 12×8 mm. | 3.00 ct. |
| 12×8.5 mm. | 3.50 ct. |
| 11×9 mm. | 3.85 ct. |
| 12.5×8.5 mm. | 4.00 ct. |
| 12.75×8.5 mm. | 4.50 ct. |
| 12×10 mm. | 5.00 ct. |
| 14×10 mm. | 5.81 ct. |
| 13×11 mm. | 6.05 ct. |
| 14×12 mm. | 8.21 ct. |
| 15×12 mm. | 8.76 ct. |
| 16×12 mm. | 9.32 ct. |
| 16×14 mm. | 11.88 ct. |
| 18×13 mm. | 12.86 ct. |
| 20×15 mm. | 14.96 ct. |

| Emerald MM Size | Emerald Carat Weight |
| 3×2 mm. | 0.10 ct. |
| 3.5×2 mm. | 0.12 ct. |
| 4×2 mm. | 0.15 ct. |
| 4×3 mm. | 0.20 ct. |
| 4.30×3 mm. | 0.25 ct. |
| 5×3 mm. | 0.29 ct. |
| 5.5×3.5 mm. | 0.46 ct. |
| 6×4 mm. | 0.50 ct. |
| 6.5×4.5 mm. | 0.75 ct. |
| 6.7×4.5 mm. | 0.88 ct. |
| 7×5 mm. | 1.00 ct. |
| 7.3×5.3 mm. | 1.25 ct. |
| 7.5×5.5 mm. | 1.50 ct. |
| 8×6 mm. | 1.75 ct. |
| 8.5×6.5 mm. | 2.00 ct. |
| 9×7 mm. | 2.50 ct. |
| 9.3×7.5 mm. | 3.00 ct. |
| 9.5×7.5 mm. | 3.21 ct. |
| 9.75×7.7 mm. | 3.50 ct. |
| 9.9×7.8 mm. | 3.79 ct. |
| 10×8 mm. | 4.00 ct. |
| 10.5×8.5 mm. | 4.50 ct. |
| 11×9 mm. | 5.00 ct. |
| 12×8 mm. | 5.34 ct. |
| 12×10 mm. | 6.00 ct. |
| 14×8 mm. | 6.25 ct. |
| 14×9 mm. | 6.38 ct. |
| 14×10 mm. | 8.48 ct. |
| 13×11 mm. | 9.13 ct. |
| 14×12 mm. | 11.26 ct. |
| 16×12 mm. | 14.22 ct. |

| Heart MM Size | Heart 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. |
| 7.7 mm. | 1.75 ct. |
| 8 mm. | 2.00 ct. |
| 8.5 mm. | 2.50 ct. |
| 9 mm. | 3.00 ct. |
| 10 mm. | 3.50 ct. |
| 10.5 mm. | 4.00 ct. |
| 11 mm. | 4.50 ct. |
| 11.5 mm. | 5.00 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. |

| Pear MM Size | Pear Carat Weight |
| 3×2 mm. | 0.13 ct. |
| 4×2.5 mm. | 0.18 ct. |
| 4×3 mm. | 0.21 ct. |
| 5×3 mm. | 0.25 ct. |
| 5×4 mm. | 0.35 ct. |
| 6×4 mm. | 0.50 ct. |
| 6.5×4.5 mm. | 0.60 ct. |
| 7×5 mm. | 0.75 ct. |
| 7.5×5.5 mm. | 0.85 ct. |
| 7.7×5.7 mm. | 1.00 ct. |
| 8×6 mm. | 1.25 ct. |
| 8.5×6.5 mm. | 1.50 ct. |
| 10×6 mm. | 1.75 ct. |
| 8.7×6.7 mm. | 1.80 ct. |
| 9×7 mm. | 2.00 ct. |
| 10×8 mm. | 2.50 ct. |
| 11×7.50 mm. | 2.61 ct. |
| 11×8 mm. | 2.70 ct. |
| 12×8 mm. | 3.00 ct. |
| 12×7 mm. | 3.12 ct. |
| 13×8 mm. | 3.40 ct. |
| 12×9 mm. | 3.50 ct. |
| 14×8 mm. | 4.00 ct. |
| 13×9 mm. | 4.11 ct. |
| 14×9 mm. | 4.25 ct. |
| 14.5×9 mm. | 4.50 ct. |
| 15×9 mm. | 5.00 ct. |
| 14×10 mm. | 5.41 ct. |
| 13×11 mm. | 5.65 ct. |
| 15×10 mm. | 5.75 ct. |
| 16×9 mm. | 5.86 ct. |
| 16×10 mm. | 6.27 ct. |
| 17×10 mm. | 6.46 ct. |
| 15×11 mm. | 7.36 ct. |
| 18×11 mm. | 8.14 ct. |
| 16×12 mm. | 8.99 ct. |
| 18×12 mm. | 9.35 ct. |
| 18×13 mm. | 10.21 ct. |

| Marquise MM Size | Marquise Carat Weight |
| 3×1.5 mm. | 0.025 ct. |
| 3.5×1.75 mm. | 0.065 ct. |
| 3.5×2 mm. | 0.07 ct. |
| 4×2 mm. | 0.10 ct. |
| 3.75×1.75 mm. | 0.11 ct. |
| 4.25×2.25 mm. | 0.12 ct. |
| 5×2.5 mm. | 0.14 ct. |
| 5.5×2.75 mm. | 0.16 ct. |
| 5.5×3 mm. | 0.18 ct. |
| 5×3 mm. | 0.20 ct. |
| 6.5×3 mm. | 0.23 ct. |
| 6×3 mm. | 0.25 ct. |
| 7×3 mm. | 0.30 ct. |
| 7.5×3.5 mm. | 0.33 ct. |
| 7×4 mm. | 0.34 ct. |
| 8×4 mm. | 0.50 ct. |
| 8.75×4.25 mm. | 0.70 ct. |
| 9×4.5 mm. | 0.75 ct. |
| 9.5×4.7 mm. | 0.85 ct. |
| 10×5 mm. | 1.00 ct. |
| 11×5.5 mm. | 1.25 ct. |
| 11.5×6 mm. | 1.33 ct. |
| 12×6 mm. | 1.50 ct. |
| 12.5×6.25 mm. | 1.75 ct. |
| 13×6.5 mm. | 2.00 ct. |
| 14×7 mm. | 2.50 ct. |
| 15×7 mm. | 3.00 ct. |
| 15×7.5 mm. | 3.25 ct. |
| 15×8 mm. | 3.50 ct. |
| 16×8 mm. | 3.86 ct. |
| 16.5×8.25 mm. | 4.00 ct. |
| 16.75×8.5 mm. | 4.50 ct. |
| 17×8.5 mm. | 5.00 ct. |
| 17.5×10 mm. | 5.50 ct. |
| 20×8 mm. | 7.08 ct. |
| 20×10 mm. | 7.94 ct. |
| 20×11 mm. | 9.50 ct. |

| Asscher MM Size | Asscher Carat Weight |
| 3.25 mm. | 0.25 ct. |
| 4 mm. | 0.39 ct. |
| 4.5 mm. | 0.50 ct. |
| 5 mm. | 0.75 ct. |
| 5.5 mm. | 1.00 ct. |
| 6 mm. | 1.25 ct. |
| 6.5 mm. | 1.50 ct. |
| 6.7 mm. | 1.75 ct. |
| 7 mm. | 2.00 ct. |
| 7.5 mm. | 2.50 ct. |
| 8 mm. | 3.00 ct. |
| 8.5 mm. | 3.50 ct. |
| 9 mm. | 4.00 ct. |
| 9.25 mm. | 4.50 ct. |
| 9.5 mm. | 5.00 ct. |
| 10 mm. | 5.62 ct. |
| 11 mm. | 7.44 ct. |
| 12 mm. | 9.52 ct. |
| 13 mm. | 12.66 ct. |

| Radiant MM Size | Radiant Carat Weight |
| 4.3×3 mm. | 0.25 ct. |
| 4.5×3.5 mm. | 0.34 ct. |
| 6×3 mm. | 0.41 ct. |
| 6×4 mm. | 0.50 ct. |
| 6.5×4.5 mm. | 0.75 ct. |
| 7×5 mm. | 1.00 ct. |
| 7.3×5.5 mm. | 1.25 ct. |
| 7.5×5.8 mm. | 1.50 ct. |
| 8×6 mm. | 1.75 ct. |
| 8.2×6.2 mm. | 2.00 ct. |
| 8.5×6.5 mm. | 2.25 ct. |
| 9×7 mm. | 2.50 ct. |
| 9.5×7.5 mm. | 3.00 ct. |
| 10×7 mm. | 3.31 ct. |
| 10×8 mm. | 3.50 ct. |
| 10.2×8.2 mm. | 4.00 ct. |
| 10.5×8.5 mm. | 4.50 ct. |
| 11×9 mm. | 5.00 ct. |
| 12×9 mm. | 6.06 ct. |
| 11.5×10 mm. | 6.45 ct. |
| 13×9 mm. | 6.54 ct. |
| 13.2×9.2 mm. | 6.79 ct. |
| 14×10 mm. | 8.47 ct. |
| 13×11 mm. | 9.33 ct. |
| 13.5×11.5 mm. | 10.19 ct. |
| 15×11 mm. | 11.48 ct. |
| 14×12 mm. | 12.14 ct. |
| 16×12 mm. | 14.22 ct. |
