Marquise-cut Emerald Size Chart
Carat to mm size chart for marquise-cut Emerald, from 0.25ct to 40ct (at an L/W ratio of 2). 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:
Emerald Size Chart (Marquise Cut)
0.25ct
6.96×3.48 mm
6.96×3.48 mm
0.5ct
8.78×4.39 mm
8.78×4.39 mm
0.75ct
10.04×5.02 mm
10.04×5.02 mm
1ct
11.06×5.53 mm
11.06×5.53 mm
1.25ct
11.92×5.96 mm
11.92×5.96 mm
1.5ct
12.66×6.33 mm
12.66×6.33 mm
1.75ct
13.32×6.66 mm
13.32×6.66 mm
2ct
13.94×6.97 mm
13.94×6.97 mm
2.5ct
15×7.5 mm
15×7.5 mm
3ct
15.94×7.97 mm
15.94×7.97 mm
3.5ct
16.78×8.39 mm
16.78×8.39 mm
4ct
17.56×8.78 mm
17.56×8.78 mm
4.5ct
18.26×9.13 mm
18.26×9.13 mm
5ct
18.9×9.45 mm
18.9×9.45 mm
5.5ct
19.52×9.76 mm
19.52×9.76 mm
6ct
20.1×10.05 mm
20.1×10.05 mm
6.5ct
20.64×10.32 mm
20.64×10.32 mm
7ct
21.16×10.58 mm
21.16×10.58 mm
7.5ct
21.64×10.82 mm
21.64×10.82 mm
8ct
22.12×11.06 mm
22.12×11.06 mm
8.5ct
22.56×11.28 mm
22.56×11.28 mm
9ct
23×11.5 mm
23×11.5 mm
9.5ct
23.42×11.71 mm
23.42×11.71 mm
10ct
23.82×11.91 mm
23.82×11.91 mm
11ct
24.58×12.29 mm
24.58×12.29 mm
12ct
25.32×12.66 mm
25.32×12.66 mm
13ct
26×13 mm
26×13 mm
14ct
26.64×13.32 mm
26.64×13.32 mm
15ct
27.26×13.63 mm
27.26×13.63 mm
16ct
27.86×13.93 mm
27.86×13.93 mm
17ct
28.42×14.21 mm
28.42×14.21 mm
18ct
28.98×14.49 mm
28.98×14.49 mm
19ct
29.5×14.75 mm
29.5×14.75 mm
20ct
30.02×15.01 mm
30.02×15.01 mm
22ct
30.98×15.49 mm
30.98×15.49 mm
24ct
31.9×15.95 mm
31.9×15.95 mm
26ct
32.76×16.38 mm
32.76×16.38 mm
28ct
33.58×16.79 mm
33.58×16.79 mm
30ct
34.36×17.18 mm
34.36×17.18 mm
33ct
35.46×17.73 mm
35.46×17.73 mm
36ct
36.5×18.25 mm
36.5×18.25 mm
40ct
37.82×18.91 mm
37.82×18.91 mm
Length-to-width ratio: 2, 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 marquise-cut Emerald carat weights to their approximate millimeter (mm) sizes:
| Carat Weight | MM Size |
|---|---|
| 0.25 ct | 6.96×3.48 mm |
| 0.5 ct | 8.78×4.39 mm |
| 0.75 ct | 10.04×5.02 mm |
| 1 ct | 11.06×5.53 mm |
| 1.25 ct | 11.92×5.96 mm |
| 1.5 ct | 12.66×6.33 mm |
| 1.75 ct | 13.32×6.66 mm |
| 2 ct | 13.94×6.97 mm |
| 2.5 ct | 15×7.5 mm |
| 3 ct | 15.94×7.97 mm |
| 3.5 ct | 16.78×8.39 mm |
| 4 ct | 17.56×8.78 mm |
| 4.5 ct | 18.26×9.13 mm |
| 5 ct | 18.9×9.45 mm |
| 5.5 ct | 19.52×9.76 mm |
| 6 ct | 20.1×10.05 mm |
| 6.5 ct | 20.64×10.32 mm |
| 7 ct | 21.16×10.58 mm |
| 7.5 ct | 21.64×10.82 mm |
| 8 ct | 22.12×11.06 mm |
| 8.5 ct | 22.56×11.28 mm |
| Carat Weight | MM Size |
|---|---|
| 9 ct | 23×11.5 mm |
| 9.5 ct | 23.42×11.71 mm |
| 10 ct | 23.82×11.91 mm |
| 11 ct | 24.58×12.29 mm |
| 12 ct | 25.32×12.66 mm |
| 13 ct | 26×13 mm |
| 14 ct | 26.64×13.32 mm |
| 15 ct | 27.26×13.63 mm |
| 16 ct | 27.86×13.93 mm |
| 17 ct | 28.42×14.21 mm |
| 18 ct | 28.98×14.49 mm |
| 19 ct | 29.5×14.75 mm |
| 20 ct | 30.02×15.01 mm |
| 22 ct | 30.98×15.49 mm |
| 24 ct | 31.9×15.95 mm |
| 26 ct | 32.76×16.38 mm |
| 28 ct | 33.58×16.79 mm |
| 30 ct | 34.36×17.18 mm |
| 33 ct | 35.46×17.73 mm |
| 36 ct | 36.5×18.25 mm |
| 40 ct | 37.82×18.91 mm |