Emerald-cut Amethyst Size Chart
Carat to mm size chart for emerald-cut Amethyst, 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:
Amethyst Size Chart (Emerald Cut)
0.25ct
4.62×3.42 mm
4.62×3.42 mm
0.5ct
5.82×4.31 mm
5.82×4.31 mm
0.75ct
6.66×4.93 mm
6.66×4.93 mm
1ct
7.33×5.43 mm
7.33×5.43 mm
1.25ct
7.88×5.84 mm
7.88×5.84 mm
1.5ct
8.38×6.21 mm
8.38×6.21 mm
1.75ct
8.83×6.54 mm
8.83×6.54 mm
2ct
9.23×6.84 mm
9.23×6.84 mm
2.5ct
9.94×7.36 mm
9.94×7.36 mm
3ct
10.57×7.83 mm
10.57×7.83 mm
3.5ct
11.12×8.24 mm
11.12×8.24 mm
4ct
11.62×8.61 mm
11.62×8.61 mm
4.5ct
12.1×8.96 mm
12.1×8.96 mm
5ct
12.53×9.28 mm
12.53×9.28 mm
5.5ct
12.93×9.58 mm
12.93×9.58 mm
6ct
13.31×9.86 mm
13.31×9.86 mm
6.5ct
13.68×10.13 mm
13.68×10.13 mm
7ct
14.01×10.38 mm
14.01×10.38 mm
7.5ct
14.34×10.62 mm
14.34×10.62 mm
8ct
14.65×10.85 mm
14.65×10.85 mm
8.5ct
14.94×11.07 mm
14.94×11.07 mm
9ct
15.24×11.29 mm
15.24×11.29 mm
9.5ct
15.51×11.49 mm
15.51×11.49 mm
10ct
15.78×11.69 mm
15.78×11.69 mm
11ct
16.29×12.07 mm
16.29×12.07 mm
12ct
16.77×12.42 mm
16.77×12.42 mm
13ct
17.23×12.76 mm
17.23×12.76 mm
14ct
17.66×13.08 mm
17.66×13.08 mm
15ct
18.06×13.38 mm
18.06×13.38 mm
16ct
18.45×13.67 mm
18.45×13.67 mm
17ct
18.83×13.95 mm
18.83×13.95 mm
18ct
19.2×14.22 mm
19.2×14.22 mm
19ct
19.55×14.48 mm
19.55×14.48 mm
20ct
19.89×14.73 mm
19.89×14.73 mm
22ct
20.52×15.2 mm
20.52×15.2 mm
24ct
21.13×15.65 mm
21.13×15.65 mm
26ct
21.69×16.07 mm
21.69×16.07 mm
28ct
22.25×16.48 mm
22.25×16.48 mm
30ct
22.76×16.86 mm
22.76×16.86 mm
33ct
23.49×17.4 mm
23.49×17.4 mm
36ct
24.19×17.92 mm
24.19×17.92 mm
40ct
25.06×18.56 mm
25.06×18.56 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 Amethyst carat weights to their approximate millimeter (mm) sizes:
| Carat Weight | MM Size |
|---|---|
| 0.25 ct | 4.62×3.42 mm |
| 0.5 ct | 5.82×4.31 mm |
| 0.75 ct | 6.66×4.93 mm |
| 1 ct | 7.33×5.43 mm |
| 1.25 ct | 7.88×5.84 mm |
| 1.5 ct | 8.38×6.21 mm |
| 1.75 ct | 8.83×6.54 mm |
| 2 ct | 9.23×6.84 mm |
| 2.5 ct | 9.94×7.36 mm |
| 3 ct | 10.57×7.83 mm |
| 3.5 ct | 11.12×8.24 mm |
| 4 ct | 11.62×8.61 mm |
| 4.5 ct | 12.1×8.96 mm |
| 5 ct | 12.53×9.28 mm |
| 5.5 ct | 12.93×9.58 mm |
| 6 ct | 13.31×9.86 mm |
| 6.5 ct | 13.68×10.13 mm |
| 7 ct | 14.01×10.38 mm |
| 7.5 ct | 14.34×10.62 mm |
| 8 ct | 14.65×10.85 mm |
| 8.5 ct | 14.94×11.07 mm |
| Carat Weight | MM Size |
|---|---|
| 9 ct | 15.24×11.29 mm |
| 9.5 ct | 15.51×11.49 mm |
| 10 ct | 15.78×11.69 mm |
| 11 ct | 16.29×12.07 mm |
| 12 ct | 16.77×12.42 mm |
| 13 ct | 17.23×12.76 mm |
| 14 ct | 17.66×13.08 mm |
| 15 ct | 18.06×13.38 mm |
| 16 ct | 18.45×13.67 mm |
| 17 ct | 18.83×13.95 mm |
| 18 ct | 19.2×14.22 mm |
| 19 ct | 19.55×14.48 mm |
| 20 ct | 19.89×14.73 mm |
| 22 ct | 20.52×15.2 mm |
| 24 ct | 21.13×15.65 mm |
| 26 ct | 21.69×16.07 mm |
| 28 ct | 22.25×16.48 mm |
| 30 ct | 22.76×16.86 mm |
| 33 ct | 23.49×17.4 mm |
| 36 ct | 24.19×17.92 mm |
| 40 ct | 25.06×18.56 mm |