Oval-cut Benitoite Size Chart
Carat to mm size chart for oval-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 (Oval Cut)
0.25ct
4.98×3.32 mm
4.98×3.32 mm
0.5ct
6.27×4.18 mm
6.27×4.18 mm
0.75ct
7.19×4.79 mm
7.19×4.79 mm
1ct
7.91×5.27 mm
7.91×5.27 mm
1.25ct
8.52×5.68 mm
8.52×5.68 mm
1.5ct
9.05×6.03 mm
9.05×6.03 mm
1.75ct
9.53×6.35 mm
9.53×6.35 mm
2ct
9.96×6.64 mm
9.96×6.64 mm
2.5ct
10.73×7.15 mm
10.73×7.15 mm
3ct
11.4×7.6 mm
11.4×7.6 mm
3.5ct
12×8 mm
12×8 mm
4ct
12.56×8.37 mm
12.56×8.37 mm
4.5ct
13.05×8.7 mm
13.05×8.7 mm
5ct
13.52×9.01 mm
13.52×9.01 mm
5.5ct
13.95×9.3 mm
13.95×9.3 mm
6ct
14.37×9.58 mm
14.37×9.58 mm
6.5ct
14.75×9.83 mm
14.75×9.83 mm
7ct
15.12×10.08 mm
15.12×10.08 mm
7.5ct
15.48×10.32 mm
15.48×10.32 mm
8ct
15.81×10.54 mm
15.81×10.54 mm
8.5ct
16.13×10.75 mm
16.13×10.75 mm
9ct
16.44×10.96 mm
16.44×10.96 mm
9.5ct
16.74×11.16 mm
16.74×11.16 mm
10ct
17.03×11.35 mm
17.03×11.35 mm
11ct
17.58×11.72 mm
17.58×11.72 mm
12ct
18.11×12.07 mm
18.11×12.07 mm
13ct
18.59×12.39 mm
18.59×12.39 mm
14ct
19.05×12.7 mm
19.05×12.7 mm
15ct
19.5×13 mm
19.5×13 mm
16ct
19.92×13.28 mm
19.92×13.28 mm
17ct
20.33×13.55 mm
20.33×13.55 mm
18ct
20.72×13.81 mm
20.72×13.81 mm
19ct
21.09×14.06 mm
21.09×14.06 mm
20ct
21.45×14.3 mm
21.45×14.3 mm
22ct
22.16×14.77 mm
22.16×14.77 mm
24ct
22.8×15.2 mm
22.8×15.2 mm
26ct
23.42×15.61 mm
23.42×15.61 mm
28ct
24×16 mm
24×16 mm
30ct
24.56×16.37 mm
24.56×16.37 mm
33ct
25.35×16.9 mm
25.35×16.9 mm
36ct
26.1×17.4 mm
26.1×17.4 mm
40ct
27.03×18.02 mm
27.03×18.02 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 oval-cut Benitoite carat weights to their approximate millimeter (mm) sizes:
| Carat Weight | MM Size |
|---|---|
| 0.25 ct | 4.98×3.32 mm |
| 0.5 ct | 6.27×4.18 mm |
| 0.75 ct | 7.19×4.79 mm |
| 1 ct | 7.91×5.27 mm |
| 1.25 ct | 8.52×5.68 mm |
| 1.5 ct | 9.05×6.03 mm |
| 1.75 ct | 9.53×6.35 mm |
| 2 ct | 9.96×6.64 mm |
| 2.5 ct | 10.73×7.15 mm |
| 3 ct | 11.4×7.6 mm |
| 3.5 ct | 12×8 mm |
| 4 ct | 12.56×8.37 mm |
| 4.5 ct | 13.05×8.7 mm |
| 5 ct | 13.52×9.01 mm |
| 5.5 ct | 13.95×9.3 mm |
| 6 ct | 14.37×9.58 mm |
| 6.5 ct | 14.75×9.83 mm |
| 7 ct | 15.12×10.08 mm |
| 7.5 ct | 15.48×10.32 mm |
| 8 ct | 15.81×10.54 mm |
| 8.5 ct | 16.13×10.75 mm |
| Carat Weight | MM Size |
|---|---|
| 9 ct | 16.44×10.96 mm |
| 9.5 ct | 16.74×11.16 mm |
| 10 ct | 17.03×11.35 mm |
| 11 ct | 17.58×11.72 mm |
| 12 ct | 18.11×12.07 mm |
| 13 ct | 18.59×12.39 mm |
| 14 ct | 19.05×12.7 mm |
| 15 ct | 19.5×13 mm |
| 16 ct | 19.92×13.28 mm |
| 17 ct | 20.33×13.55 mm |
| 18 ct | 20.72×13.81 mm |
| 19 ct | 21.09×14.06 mm |
| 20 ct | 21.45×14.3 mm |
| 22 ct | 22.16×14.77 mm |
| 24 ct | 22.8×15.2 mm |
| 26 ct | 23.42×15.61 mm |
| 28 ct | 24×16 mm |
| 30 ct | 24.56×16.37 mm |
| 33 ct | 25.35×16.9 mm |
| 36 ct | 26.1×17.4 mm |
| 40 ct | 27.03×18.02 mm |