Marquise-cut Benitoite Size Chart
Carat to mm size chart for marquise-cut Benitoite, 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:
Benitoite Size Chart (Marquise Cut)
0.25ct
6.32×3.16 mm
6.32×3.16 mm
0.5ct
7.96×3.98 mm
7.96×3.98 mm
0.75ct
9.1×4.55 mm
9.1×4.55 mm
1ct
10.02×5.01 mm
10.02×5.01 mm
1.25ct
10.8×5.4 mm
10.8×5.4 mm
1.5ct
11.48×5.74 mm
11.48×5.74 mm
1.75ct
12.08×6.04 mm
12.08×6.04 mm
2ct
12.62×6.31 mm
12.62×6.31 mm
2.5ct
13.6×6.8 mm
13.6×6.8 mm
3ct
14.46×7.23 mm
14.46×7.23 mm
3.5ct
15.22×7.61 mm
15.22×7.61 mm
4ct
15.92×7.96 mm
15.92×7.96 mm
4.5ct
16.54×8.27 mm
16.54×8.27 mm
5ct
17.14×8.57 mm
17.14×8.57 mm
5.5ct
17.7×8.85 mm
17.7×8.85 mm
6ct
18.22×9.11 mm
18.22×9.11 mm
6.5ct
18.7×9.35 mm
18.7×9.35 mm
7ct
19.18×9.59 mm
19.18×9.59 mm
7.5ct
19.62×9.81 mm
19.62×9.81 mm
8ct
20.04×10.02 mm
20.04×10.02 mm
8.5ct
20.46×10.23 mm
20.46×10.23 mm
9ct
20.86×10.43 mm
20.86×10.43 mm
9.5ct
21.24×10.62 mm
21.24×10.62 mm
10ct
21.6×10.8 mm
21.6×10.8 mm
11ct
22.3×11.15 mm
22.3×11.15 mm
12ct
22.94×11.47 mm
22.94×11.47 mm
13ct
23.58×11.79 mm
23.58×11.79 mm
14ct
24.16×12.08 mm
24.16×12.08 mm
15ct
24.72×12.36 mm
24.72×12.36 mm
16ct
25.26×12.63 mm
25.26×12.63 mm
17ct
25.78×12.89 mm
25.78×12.89 mm
18ct
26.28×13.14 mm
26.28×13.14 mm
19ct
26.74×13.37 mm
26.74×13.37 mm
20ct
27.2×13.6 mm
27.2×13.6 mm
22ct
28.08×14.04 mm
28.08×14.04 mm
24ct
28.92×14.46 mm
28.92×14.46 mm
26ct
29.7×14.85 mm
29.7×14.85 mm
28ct
30.44×15.22 mm
30.44×15.22 mm
30ct
31.14×15.57 mm
31.14×15.57 mm
33ct
32.16×16.08 mm
32.16×16.08 mm
36ct
33.1×16.55 mm
33.1×16.55 mm
40ct
34.28×17.14 mm
34.28×17.14 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 Benitoite carat weights to their approximate millimeter (mm) sizes:
| Carat Weight | MM Size |
|---|---|
| 0.25 ct | 6.32×3.16 mm |
| 0.5 ct | 7.96×3.98 mm |
| 0.75 ct | 9.1×4.55 mm |
| 1 ct | 10.02×5.01 mm |
| 1.25 ct | 10.8×5.4 mm |
| 1.5 ct | 11.48×5.74 mm |
| 1.75 ct | 12.08×6.04 mm |
| 2 ct | 12.62×6.31 mm |
| 2.5 ct | 13.6×6.8 mm |
| 3 ct | 14.46×7.23 mm |
| 3.5 ct | 15.22×7.61 mm |
| 4 ct | 15.92×7.96 mm |
| 4.5 ct | 16.54×8.27 mm |
| 5 ct | 17.14×8.57 mm |
| 5.5 ct | 17.7×8.85 mm |
| 6 ct | 18.22×9.11 mm |
| 6.5 ct | 18.7×9.35 mm |
| 7 ct | 19.18×9.59 mm |
| 7.5 ct | 19.62×9.81 mm |
| 8 ct | 20.04×10.02 mm |
| 8.5 ct | 20.46×10.23 mm |
| Carat Weight | MM Size |
|---|---|
| 9 ct | 20.86×10.43 mm |
| 9.5 ct | 21.24×10.62 mm |
| 10 ct | 21.6×10.8 mm |
| 11 ct | 22.3×11.15 mm |
| 12 ct | 22.94×11.47 mm |
| 13 ct | 23.58×11.79 mm |
| 14 ct | 24.16×12.08 mm |
| 15 ct | 24.72×12.36 mm |
| 16 ct | 25.26×12.63 mm |
| 17 ct | 25.78×12.89 mm |
| 18 ct | 26.28×13.14 mm |
| 19 ct | 26.74×13.37 mm |
| 20 ct | 27.2×13.6 mm |
| 22 ct | 28.08×14.04 mm |
| 24 ct | 28.92×14.46 mm |
| 26 ct | 29.7×14.85 mm |
| 28 ct | 30.44×15.22 mm |
| 30 ct | 31.14×15.57 mm |
| 33 ct | 32.16×16.08 mm |
| 36 ct | 33.1×16.55 mm |
| 40 ct | 34.28×17.14 mm |