Emerald-cut Alexandrite Size Chart
Carat to mm size chart for emerald-cut Alexandrite, 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:
Alexandrite Size Chart (Emerald Cut)
0.25ct
4.12×3.05 mm
4.12×3.05 mm
0.5ct
5.18×3.84 mm
5.18×3.84 mm
0.75ct
5.94×4.4 mm
5.94×4.4 mm
1ct
6.53×4.84 mm
6.53×4.84 mm
1.25ct
7.05×5.22 mm
7.05×5.22 mm
1.5ct
7.48×5.54 mm
7.48×5.54 mm
1.75ct
7.87×5.83 mm
7.87×5.83 mm
2ct
8.24×6.1 mm
8.24×6.1 mm
2.5ct
8.87×6.57 mm
8.87×6.57 mm
3ct
9.42×6.98 mm
9.42×6.98 mm
3.5ct
9.92×7.35 mm
9.92×7.35 mm
4ct
10.38×7.69 mm
10.38×7.69 mm
4.5ct
10.79×7.99 mm
10.79×7.99 mm
5ct
11.18×8.28 mm
11.18×8.28 mm
5.5ct
11.54×8.55 mm
11.54×8.55 mm
6ct
11.88×8.8 mm
11.88×8.8 mm
6.5ct
12.2×9.04 mm
12.2×9.04 mm
7ct
12.5×9.26 mm
12.5×9.26 mm
7.5ct
12.8×9.48 mm
12.8×9.48 mm
8ct
13.07×9.68 mm
13.07×9.68 mm
8.5ct
13.34×9.88 mm
13.34×9.88 mm
9ct
13.59×10.07 mm
13.59×10.07 mm
9.5ct
13.84×10.25 mm
13.84×10.25 mm
10ct
14.08×10.43 mm
14.08×10.43 mm
11ct
14.54×10.77 mm
14.54×10.77 mm
12ct
14.96×11.08 mm
14.96×11.08 mm
13ct
15.36×11.38 mm
15.36×11.38 mm
14ct
15.75×11.67 mm
15.75×11.67 mm
15ct
16.12×11.94 mm
16.12×11.94 mm
16ct
16.47×12.2 mm
16.47×12.2 mm
17ct
16.81×12.45 mm
16.81×12.45 mm
18ct
17.13×12.69 mm
17.13×12.69 mm
19ct
17.44×12.92 mm
17.44×12.92 mm
20ct
17.74×13.14 mm
17.74×13.14 mm
22ct
18.32×13.57 mm
18.32×13.57 mm
24ct
18.86×13.97 mm
18.86×13.97 mm
26ct
19.36×14.34 mm
19.36×14.34 mm
28ct
19.85×14.7 mm
19.85×14.7 mm
30ct
20.3×15.04 mm
20.3×15.04 mm
33ct
20.97×15.53 mm
20.97×15.53 mm
36ct
21.59×15.99 mm
21.59×15.99 mm
40ct
22.36×16.56 mm
22.36×16.56 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 Alexandrite carat weights to their approximate millimeter (mm) sizes:
| Carat Weight | MM Size |
|---|---|
| 0.25 ct | 4.12×3.05 mm |
| 0.5 ct | 5.18×3.84 mm |
| 0.75 ct | 5.94×4.4 mm |
| 1 ct | 6.53×4.84 mm |
| 1.25 ct | 7.05×5.22 mm |
| 1.5 ct | 7.48×5.54 mm |
| 1.75 ct | 7.87×5.83 mm |
| 2 ct | 8.24×6.1 mm |
| 2.5 ct | 8.87×6.57 mm |
| 3 ct | 9.42×6.98 mm |
| 3.5 ct | 9.92×7.35 mm |
| 4 ct | 10.38×7.69 mm |
| 4.5 ct | 10.79×7.99 mm |
| 5 ct | 11.18×8.28 mm |
| 5.5 ct | 11.54×8.55 mm |
| 6 ct | 11.88×8.8 mm |
| 6.5 ct | 12.2×9.04 mm |
| 7 ct | 12.5×9.26 mm |
| 7.5 ct | 12.8×9.48 mm |
| 8 ct | 13.07×9.68 mm |
| 8.5 ct | 13.34×9.88 mm |
| Carat Weight | MM Size |
|---|---|
| 9 ct | 13.59×10.07 mm |
| 9.5 ct | 13.84×10.25 mm |
| 10 ct | 14.08×10.43 mm |
| 11 ct | 14.54×10.77 mm |
| 12 ct | 14.96×11.08 mm |
| 13 ct | 15.36×11.38 mm |
| 14 ct | 15.75×11.67 mm |
| 15 ct | 16.12×11.94 mm |
| 16 ct | 16.47×12.2 mm |
| 17 ct | 16.81×12.45 mm |
| 18 ct | 17.13×12.69 mm |
| 19 ct | 17.44×12.92 mm |
| 20 ct | 17.74×13.14 mm |
| 22 ct | 18.32×13.57 mm |
| 24 ct | 18.86×13.97 mm |
| 26 ct | 19.36×14.34 mm |
| 28 ct | 19.85×14.7 mm |
| 30 ct | 20.3×15.04 mm |
| 33 ct | 20.97×15.53 mm |
| 36 ct | 21.59×15.99 mm |
| 40 ct | 22.36×16.56 mm |