Emerald-cut Tourmaline Size Chart
Carat to mm size chart for emerald-cut Tourmaline, from 0.25ct to 40ct (at an L/W ratio of 1.35). The chart is interactive, meaning you can click on any stone to view it directly in the size simulator.
Gem sizes are shown in actual, real-world size, provided your device screen size is in diagonal. If this is not correct, change it here:
Gem sizes are shown in actual, real-world size, provided your device screen size is in diagonal. If this is not correct, change it here:
Actual size is set for screen
Gemstone:
Shape:
Tourmaline Size Chart (Emerald Cut)
0.25ct
4.4×3.26 mm
4.4×3.26 mm
0.5ct
5.54×4.1 mm
5.54×4.1 mm
0.75ct
6.35×4.7 mm
6.35×4.7 mm
1ct
6.98×5.17 mm
6.98×5.17 mm
1.25ct
7.52×5.57 mm
7.52×5.57 mm
1.5ct
7.99×5.92 mm
7.99×5.92 mm
1.75ct
8.41×6.23 mm
8.41×6.23 mm
2ct
8.8×6.52 mm
8.8×6.52 mm
2.5ct
9.48×7.02 mm
9.48×7.02 mm
3ct
10.07×7.46 mm
10.07×7.46 mm
3.5ct
10.6×7.85 mm
10.6×7.85 mm
4ct
11.08×8.21 mm
11.08×8.21 mm
4.5ct
11.53×8.54 mm
11.53×8.54 mm
5ct
11.93×8.84 mm
11.93×8.84 mm
5.5ct
12.33×9.13 mm
12.33×9.13 mm
6ct
12.69×9.4 mm
12.69×9.4 mm
6.5ct
13.03×9.65 mm
13.03×9.65 mm
7ct
13.35×9.89 mm
13.35×9.89 mm
7.5ct
13.66×10.12 mm
13.66×10.12 mm
8ct
13.96×10.34 mm
13.96×10.34 mm
8.5ct
14.24×10.55 mm
14.24×10.55 mm
9ct
14.53×10.76 mm
14.53×10.76 mm
9.5ct
14.78×10.95 mm
14.78×10.95 mm
10ct
15.04×11.14 mm
15.04×11.14 mm
11ct
15.53×11.5 mm
15.53×11.5 mm
12ct
15.98×11.84 mm
15.98×11.84 mm
13ct
16.42×12.16 mm
16.42×12.16 mm
14ct
16.82×12.46 mm
16.82×12.46 mm
15ct
17.21×12.75 mm
17.21×12.75 mm
16ct
17.59×13.03 mm
17.59×13.03 mm
17ct
17.96×13.3 mm
17.96×13.3 mm
18ct
18.29×13.55 mm
18.29×13.55 mm
19ct
18.63×13.8 mm
18.63×13.8 mm
20ct
18.95×14.04 mm
18.95×14.04 mm
22ct
19.56×14.49 mm
19.56×14.49 mm
24ct
20.14×14.92 mm
20.14×14.92 mm
26ct
20.68×15.32 mm
20.68×15.32 mm
28ct
21.2×15.7 mm
21.2×15.7 mm
30ct
21.69×16.07 mm
21.69×16.07 mm
33ct
22.4×16.59 mm
22.4×16.59 mm
36ct
23.06×17.08 mm
23.06×17.08 mm
40ct
23.88×17.69 mm
23.88×17.69 mm
Length-to-width ratio: 1.35, Color:
Download Chart
Note: If you want to cut out the shapes and try them on your finger, print out the PDF chart. The image (png) chart will not print at actual size.
Carat-to-MM Conversion Table
Use this conversion table to quickly convert emerald-cut Tourmaline carat weights to their approximate millimeter (mm) sizes:
| Carat Weight | MM Size |
|---|---|
| 0.25 ct | 4.4×3.26 mm |
| 0.5 ct | 5.54×4.1 mm |
| 0.75 ct | 6.35×4.7 mm |
| 1 ct | 6.98×5.17 mm |
| 1.25 ct | 7.52×5.57 mm |
| 1.5 ct | 7.99×5.92 mm |
| 1.75 ct | 8.41×6.23 mm |
| 2 ct | 8.8×6.52 mm |
| 2.5 ct | 9.48×7.02 mm |
| 3 ct | 10.07×7.46 mm |
| 3.5 ct | 10.6×7.85 mm |
| 4 ct | 11.08×8.21 mm |
| 4.5 ct | 11.53×8.54 mm |
| 5 ct | 11.93×8.84 mm |
| 5.5 ct | 12.33×9.13 mm |
| 6 ct | 12.69×9.4 mm |
| 6.5 ct | 13.03×9.65 mm |
| 7 ct | 13.35×9.89 mm |
| 7.5 ct | 13.66×10.12 mm |
| 8 ct | 13.96×10.34 mm |
| 8.5 ct | 14.24×10.55 mm |
| Carat Weight | MM Size |
|---|---|
| 9 ct | 14.53×10.76 mm |
| 9.5 ct | 14.78×10.95 mm |
| 10 ct | 15.04×11.14 mm |
| 11 ct | 15.53×11.5 mm |
| 12 ct | 15.98×11.84 mm |
| 13 ct | 16.42×12.16 mm |
| 14 ct | 16.82×12.46 mm |
| 15 ct | 17.21×12.75 mm |
| 16 ct | 17.59×13.03 mm |
| 17 ct | 17.96×13.3 mm |
| 18 ct | 18.29×13.55 mm |
| 19 ct | 18.63×13.8 mm |
| 20 ct | 18.95×14.04 mm |
| 22 ct | 19.56×14.49 mm |
| 24 ct | 20.14×14.92 mm |
| 26 ct | 20.68×15.32 mm |
| 28 ct | 21.2×15.7 mm |
| 30 ct | 21.69×16.07 mm |
| 33 ct | 22.4×16.59 mm |
| 36 ct | 23.06×17.08 mm |
| 40 ct | 23.88×17.69 mm |