Emerald-cut Aquamarine Size Chart
Carat to mm size chart for emerald-cut Aquamarine, 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:
Aquamarine Size Chart (Emerald Cut)
0.25ct
4.58×3.39 mm
4.58×3.39 mm
0.5ct
5.76×4.27 mm
5.76×4.27 mm
0.75ct
6.6×4.89 mm
6.6×4.89 mm
1ct
7.26×5.38 mm
7.26×5.38 mm
1.25ct
7.82×5.79 mm
7.82×5.79 mm
1.5ct
8.32×6.16 mm
8.32×6.16 mm
1.75ct
8.75×6.48 mm
8.75×6.48 mm
2ct
9.15×6.78 mm
9.15×6.78 mm
2.5ct
9.86×7.3 mm
9.86×7.3 mm
3ct
10.48×7.76 mm
10.48×7.76 mm
3.5ct
11.03×8.17 mm
11.03×8.17 mm
4ct
11.53×8.54 mm
11.53×8.54 mm
4.5ct
11.99×8.88 mm
11.99×8.88 mm
5ct
12.42×9.2 mm
12.42×9.2 mm
5.5ct
12.81×9.49 mm
12.81×9.49 mm
6ct
13.19×9.77 mm
13.19×9.77 mm
6.5ct
13.55×10.04 mm
13.55×10.04 mm
7ct
13.89×10.29 mm
13.89×10.29 mm
7.5ct
14.22×10.53 mm
14.22×10.53 mm
8ct
14.53×10.76 mm
14.53×10.76 mm
8.5ct
14.82×10.98 mm
14.82×10.98 mm
9ct
15.11×11.19 mm
15.11×11.19 mm
9.5ct
15.38×11.39 mm
15.38×11.39 mm
10ct
15.65×11.59 mm
15.65×11.59 mm
11ct
16.15×11.96 mm
16.15×11.96 mm
12ct
16.62×12.31 mm
16.62×12.31 mm
13ct
17.08×12.65 mm
17.08×12.65 mm
14ct
17.5×12.96 mm
17.5×12.96 mm
15ct
17.91×13.27 mm
17.91×13.27 mm
16ct
18.29×13.55 mm
18.29×13.55 mm
17ct
18.67×13.83 mm
18.67×13.83 mm
18ct
19.04×14.1 mm
19.04×14.1 mm
19ct
19.37×14.35 mm
19.37×14.35 mm
20ct
19.71×14.6 mm
19.71×14.6 mm
22ct
20.34×15.07 mm
20.34×15.07 mm
24ct
20.95×15.52 mm
20.95×15.52 mm
26ct
21.51×15.93 mm
21.51×15.93 mm
28ct
22.05×16.33 mm
22.05×16.33 mm
30ct
22.56×16.71 mm
22.56×16.71 mm
33ct
23.29×17.25 mm
23.29×17.25 mm
36ct
23.98×17.76 mm
23.98×17.76 mm
40ct
24.84×18.4 mm
24.84×18.4 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 Aquamarine carat weights to their approximate millimeter (mm) sizes:
| Carat Weight | MM Size |
|---|---|
| 0.25 ct | 4.58×3.39 mm |
| 0.5 ct | 5.76×4.27 mm |
| 0.75 ct | 6.6×4.89 mm |
| 1 ct | 7.26×5.38 mm |
| 1.25 ct | 7.82×5.79 mm |
| 1.5 ct | 8.32×6.16 mm |
| 1.75 ct | 8.75×6.48 mm |
| 2 ct | 9.15×6.78 mm |
| 2.5 ct | 9.86×7.3 mm |
| 3 ct | 10.48×7.76 mm |
| 3.5 ct | 11.03×8.17 mm |
| 4 ct | 11.53×8.54 mm |
| 4.5 ct | 11.99×8.88 mm |
| 5 ct | 12.42×9.2 mm |
| 5.5 ct | 12.81×9.49 mm |
| 6 ct | 13.19×9.77 mm |
| 6.5 ct | 13.55×10.04 mm |
| 7 ct | 13.89×10.29 mm |
| 7.5 ct | 14.22×10.53 mm |
| 8 ct | 14.53×10.76 mm |
| 8.5 ct | 14.82×10.98 mm |
| Carat Weight | MM Size |
|---|---|
| 9 ct | 15.11×11.19 mm |
| 9.5 ct | 15.38×11.39 mm |
| 10 ct | 15.65×11.59 mm |
| 11 ct | 16.15×11.96 mm |
| 12 ct | 16.62×12.31 mm |
| 13 ct | 17.08×12.65 mm |
| 14 ct | 17.5×12.96 mm |
| 15 ct | 17.91×13.27 mm |
| 16 ct | 18.29×13.55 mm |
| 17 ct | 18.67×13.83 mm |
| 18 ct | 19.04×14.1 mm |
| 19 ct | 19.37×14.35 mm |
| 20 ct | 19.71×14.6 mm |
| 22 ct | 20.34×15.07 mm |
| 24 ct | 20.95×15.52 mm |
| 26 ct | 21.51×15.93 mm |
| 28 ct | 22.05×16.33 mm |
| 30 ct | 22.56×16.71 mm |
| 33 ct | 23.29×17.25 mm |
| 36 ct | 23.98×17.76 mm |
| 40 ct | 24.84×18.4 mm |