Cabochon-cut Benitoite Size Chart
Carat to mm size chart for cabochon-cut Benitoite, from 0.25ct to 40ct (at an L/W ratio of 1.5). 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:
Benitoite Size Chart (Cabochon Cut)
0.25ct
4.44×2.96 mm
4.44×2.96 mm
0.5ct
5.6×3.73 mm
5.6×3.73 mm
0.75ct
6.41×4.27 mm
6.41×4.27 mm
1ct
7.05×4.7 mm
7.05×4.7 mm
1.25ct
7.61×5.07 mm
7.61×5.07 mm
1.5ct
8.07×5.38 mm
8.07×5.38 mm
1.75ct
8.51×5.67 mm
8.51×5.67 mm
2ct
8.9×5.93 mm
8.9×5.93 mm
2.5ct
9.57×6.38 mm
9.57×6.38 mm
3ct
10.17×6.78 mm
10.17×6.78 mm
3.5ct
10.71×7.14 mm
10.71×7.14 mm
4ct
11.21×7.47 mm
11.21×7.47 mm
4.5ct
11.66×7.77 mm
11.66×7.77 mm
5ct
12.06×8.04 mm
12.06×8.04 mm
5.5ct
12.45×8.3 mm
12.45×8.3 mm
6ct
12.83×8.55 mm
12.83×8.55 mm
6.5ct
13.17×8.78 mm
13.17×8.78 mm
7ct
13.5×9 mm
13.5×9 mm
7.5ct
13.82×9.21 mm
13.82×9.21 mm
8ct
14.12×9.41 mm
14.12×9.41 mm
8.5ct
14.4×9.6 mm
14.4×9.6 mm
9ct
14.67×9.78 mm
14.67×9.78 mm
9.5ct
14.94×9.96 mm
14.94×9.96 mm
10ct
15.2×10.13 mm
15.2×10.13 mm
11ct
15.69×10.46 mm
15.69×10.46 mm
12ct
16.16×10.77 mm
16.16×10.77 mm
13ct
16.59×11.06 mm
16.59×11.06 mm
14ct
17.01×11.34 mm
17.01×11.34 mm
15ct
17.4×11.6 mm
17.4×11.6 mm
16ct
17.78×11.85 mm
17.78×11.85 mm
17ct
18.14×12.09 mm
18.14×12.09 mm
18ct
18.5×12.33 mm
18.5×12.33 mm
19ct
18.83×12.55 mm
18.83×12.55 mm
20ct
19.16×12.77 mm
19.16×12.77 mm
22ct
19.77×13.18 mm
19.77×13.18 mm
24ct
20.36×13.57 mm
20.36×13.57 mm
26ct
20.9×13.93 mm
20.9×13.93 mm
28ct
21.42×14.28 mm
21.42×14.28 mm
30ct
21.93×14.62 mm
21.93×14.62 mm
33ct
22.64×15.09 mm
22.64×15.09 mm
36ct
23.3×15.53 mm
23.3×15.53 mm
40ct
24.14×16.09 mm
24.14×16.09 mm
Length-to-width ratio: 1.5, 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 cabochon-cut Benitoite carat weights to their approximate millimeter (mm) sizes:
| Carat Weight | MM Size |
|---|---|
| 0.25 ct | 4.44×2.96 mm |
| 0.5 ct | 5.6×3.73 mm |
| 0.75 ct | 6.41×4.27 mm |
| 1 ct | 7.05×4.7 mm |
| 1.25 ct | 7.61×5.07 mm |
| 1.5 ct | 8.07×5.38 mm |
| 1.75 ct | 8.51×5.67 mm |
| 2 ct | 8.9×5.93 mm |
| 2.5 ct | 9.57×6.38 mm |
| 3 ct | 10.17×6.78 mm |
| 3.5 ct | 10.71×7.14 mm |
| 4 ct | 11.21×7.47 mm |
| 4.5 ct | 11.66×7.77 mm |
| 5 ct | 12.06×8.04 mm |
| 5.5 ct | 12.45×8.3 mm |
| 6 ct | 12.83×8.55 mm |
| 6.5 ct | 13.17×8.78 mm |
| 7 ct | 13.5×9 mm |
| 7.5 ct | 13.82×9.21 mm |
| 8 ct | 14.12×9.41 mm |
| 8.5 ct | 14.4×9.6 mm |
| Carat Weight | MM Size |
|---|---|
| 9 ct | 14.67×9.78 mm |
| 9.5 ct | 14.94×9.96 mm |
| 10 ct | 15.2×10.13 mm |
| 11 ct | 15.69×10.46 mm |
| 12 ct | 16.16×10.77 mm |
| 13 ct | 16.59×11.06 mm |
| 14 ct | 17.01×11.34 mm |
| 15 ct | 17.4×11.6 mm |
| 16 ct | 17.78×11.85 mm |
| 17 ct | 18.14×12.09 mm |
| 18 ct | 18.5×12.33 mm |
| 19 ct | 18.83×12.55 mm |
| 20 ct | 19.16×12.77 mm |
| 22 ct | 19.77×13.18 mm |
| 24 ct | 20.36×13.57 mm |
| 26 ct | 20.9×13.93 mm |
| 28 ct | 21.42×14.28 mm |
| 30 ct | 21.93×14.62 mm |
| 33 ct | 22.64×15.09 mm |
| 36 ct | 23.3×15.53 mm |
| 40 ct | 24.14×16.09 mm |