Cabochon-cut Diaspore Size Chart
Carat to mm size chart for cabochon-cut Diaspore, 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:
Diaspore Size Chart (Cabochon Cut)
0.25ct
4.55×3.03 mm
4.55×3.03 mm
0.5ct
5.73×3.82 mm
5.73×3.82 mm
0.75ct
6.57×4.38 mm
6.57×4.38 mm
1ct
7.23×4.82 mm
7.23×4.82 mm
1.25ct
7.79×5.19 mm
7.79×5.19 mm
1.5ct
8.27×5.51 mm
8.27×5.51 mm
1.75ct
8.7×5.8 mm
8.7×5.8 mm
2ct
9.11×6.07 mm
9.11×6.07 mm
2.5ct
9.81×6.54 mm
9.81×6.54 mm
3ct
10.43×6.95 mm
10.43×6.95 mm
3.5ct
10.97×7.31 mm
10.97×7.31 mm
4ct
11.48×7.65 mm
11.48×7.65 mm
4.5ct
11.93×7.95 mm
11.93×7.95 mm
5ct
12.36×8.24 mm
12.36×8.24 mm
5.5ct
12.75×8.5 mm
12.75×8.5 mm
6ct
13.13×8.75 mm
13.13×8.75 mm
6.5ct
13.49×8.99 mm
13.49×8.99 mm
7ct
13.82×9.21 mm
13.82×9.21 mm
7.5ct
14.15×9.43 mm
14.15×9.43 mm
8ct
14.45×9.63 mm
14.45×9.63 mm
8.5ct
14.75×9.83 mm
14.75×9.83 mm
9ct
15.03×10.02 mm
15.03×10.02 mm
9.5ct
15.3×10.2 mm
15.3×10.2 mm
10ct
15.57×10.38 mm
15.57×10.38 mm
11ct
16.07×10.71 mm
16.07×10.71 mm
12ct
16.55×11.03 mm
16.55×11.03 mm
13ct
16.98×11.32 mm
16.98×11.32 mm
14ct
17.42×11.61 mm
17.42×11.61 mm
15ct
17.82×11.88 mm
17.82×11.88 mm
16ct
18.21×12.14 mm
18.21×12.14 mm
17ct
18.57×12.38 mm
18.57×12.38 mm
18ct
18.93×12.62 mm
18.93×12.62 mm
19ct
19.28×12.85 mm
19.28×12.85 mm
20ct
19.61×13.07 mm
19.61×13.07 mm
22ct
20.25×13.5 mm
20.25×13.5 mm
24ct
20.84×13.89 mm
20.84×13.89 mm
26ct
21.41×14.27 mm
21.41×14.27 mm
28ct
21.95×14.63 mm
21.95×14.63 mm
30ct
22.46×14.97 mm
22.46×14.97 mm
33ct
23.18×15.45 mm
23.18×15.45 mm
36ct
23.85×15.9 mm
23.85×15.9 mm
40ct
24.71×16.47 mm
24.71×16.47 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 Diaspore carat weights to their approximate millimeter (mm) sizes:
| Carat Weight | MM Size |
|---|---|
| 0.25 ct | 4.55×3.03 mm |
| 0.5 ct | 5.73×3.82 mm |
| 0.75 ct | 6.57×4.38 mm |
| 1 ct | 7.23×4.82 mm |
| 1.25 ct | 7.79×5.19 mm |
| 1.5 ct | 8.27×5.51 mm |
| 1.75 ct | 8.7×5.8 mm |
| 2 ct | 9.11×6.07 mm |
| 2.5 ct | 9.81×6.54 mm |
| 3 ct | 10.43×6.95 mm |
| 3.5 ct | 10.97×7.31 mm |
| 4 ct | 11.48×7.65 mm |
| 4.5 ct | 11.93×7.95 mm |
| 5 ct | 12.36×8.24 mm |
| 5.5 ct | 12.75×8.5 mm |
| 6 ct | 13.13×8.75 mm |
| 6.5 ct | 13.49×8.99 mm |
| 7 ct | 13.82×9.21 mm |
| 7.5 ct | 14.15×9.43 mm |
| 8 ct | 14.45×9.63 mm |
| 8.5 ct | 14.75×9.83 mm |
| Carat Weight | MM Size |
|---|---|
| 9 ct | 15.03×10.02 mm |
| 9.5 ct | 15.3×10.2 mm |
| 10 ct | 15.57×10.38 mm |
| 11 ct | 16.07×10.71 mm |
| 12 ct | 16.55×11.03 mm |
| 13 ct | 16.98×11.32 mm |
| 14 ct | 17.42×11.61 mm |
| 15 ct | 17.82×11.88 mm |
| 16 ct | 18.21×12.14 mm |
| 17 ct | 18.57×12.38 mm |
| 18 ct | 18.93×12.62 mm |
| 19 ct | 19.28×12.85 mm |
| 20 ct | 19.61×13.07 mm |
| 22 ct | 20.25×13.5 mm |
| 24 ct | 20.84×13.89 mm |
| 26 ct | 21.41×14.27 mm |
| 28 ct | 21.95×14.63 mm |
| 30 ct | 22.46×14.97 mm |
| 33 ct | 23.18×15.45 mm |
| 36 ct | 23.85×15.9 mm |
| 40 ct | 24.71×16.47 mm |