Pear-cut Diaspore Size Chart
Carat to mm size chart for pear-cut Diaspore, from 0.25ct to 40ct (at an L/W ratio of 1.66). 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 (Pear Cut)
0.25ct
5.66×3.41 mm
5.66×3.41 mm
0.5ct
7.12×4.29 mm
7.12×4.29 mm
0.75ct
8.15×4.91 mm
8.15×4.91 mm
1ct
8.98×5.41 mm
8.98×5.41 mm
1.25ct
9.68×5.83 mm
9.68×5.83 mm
1.5ct
10.28×6.19 mm
10.28×6.19 mm
1.75ct
10.82×6.52 mm
10.82×6.52 mm
2ct
11.3×6.81 mm
11.3×6.81 mm
2.5ct
12.18×7.34 mm
12.18×7.34 mm
3ct
12.95×7.8 mm
12.95×7.8 mm
3.5ct
13.63×8.21 mm
13.63×8.21 mm
4ct
14.26×8.59 mm
14.26×8.59 mm
4.5ct
14.82×8.93 mm
14.82×8.93 mm
5ct
15.36×9.25 mm
15.36×9.25 mm
5.5ct
15.85×9.55 mm
15.85×9.55 mm
6ct
16.32×9.83 mm
16.32×9.83 mm
6.5ct
16.75×10.09 mm
16.75×10.09 mm
7ct
17.18×10.35 mm
17.18×10.35 mm
7.5ct
17.58×10.59 mm
17.58×10.59 mm
8ct
17.96×10.82 mm
17.96×10.82 mm
8.5ct
18.33×11.04 mm
18.33×11.04 mm
9ct
18.68×11.25 mm
18.68×11.25 mm
9.5ct
19.01×11.45 mm
19.01×11.45 mm
10ct
19.34×11.65 mm
19.34×11.65 mm
11ct
19.97×12.03 mm
19.97×12.03 mm
12ct
20.55×12.38 mm
20.55×12.38 mm
13ct
21.12×12.72 mm
21.12×12.72 mm
14ct
21.63×13.03 mm
21.63×13.03 mm
15ct
22.14×13.34 mm
22.14×13.34 mm
16ct
22.63×13.63 mm
22.63×13.63 mm
17ct
23.09×13.91 mm
23.09×13.91 mm
18ct
23.52×14.17 mm
23.52×14.17 mm
19ct
23.95×14.43 mm
23.95×14.43 mm
20ct
24.37×14.68 mm
24.37×14.68 mm
22ct
25.15×15.15 mm
25.15×15.15 mm
24ct
25.9×15.6 mm
25.9×15.6 mm
26ct
26.59×16.02 mm
26.59×16.02 mm
28ct
27.26×16.42 mm
27.26×16.42 mm
30ct
27.9×16.81 mm
27.9×16.81 mm
33ct
28.8×17.35 mm
28.8×17.35 mm
36ct
29.65×17.86 mm
29.65×17.86 mm
40ct
30.71×18.5 mm
30.71×18.5 mm
Length-to-width ratio: 1.66, 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 pear-cut Diaspore carat weights to their approximate millimeter (mm) sizes:
| Carat Weight | MM Size |
|---|---|
| 0.25 ct | 5.66×3.41 mm |
| 0.5 ct | 7.12×4.29 mm |
| 0.75 ct | 8.15×4.91 mm |
| 1 ct | 8.98×5.41 mm |
| 1.25 ct | 9.68×5.83 mm |
| 1.5 ct | 10.28×6.19 mm |
| 1.75 ct | 10.82×6.52 mm |
| 2 ct | 11.3×6.81 mm |
| 2.5 ct | 12.18×7.34 mm |
| 3 ct | 12.95×7.8 mm |
| 3.5 ct | 13.63×8.21 mm |
| 4 ct | 14.26×8.59 mm |
| 4.5 ct | 14.82×8.93 mm |
| 5 ct | 15.36×9.25 mm |
| 5.5 ct | 15.85×9.55 mm |
| 6 ct | 16.32×9.83 mm |
| 6.5 ct | 16.75×10.09 mm |
| 7 ct | 17.18×10.35 mm |
| 7.5 ct | 17.58×10.59 mm |
| 8 ct | 17.96×10.82 mm |
| 8.5 ct | 18.33×11.04 mm |
| Carat Weight | MM Size |
|---|---|
| 9 ct | 18.68×11.25 mm |
| 9.5 ct | 19.01×11.45 mm |
| 10 ct | 19.34×11.65 mm |
| 11 ct | 19.97×12.03 mm |
| 12 ct | 20.55×12.38 mm |
| 13 ct | 21.12×12.72 mm |
| 14 ct | 21.63×13.03 mm |
| 15 ct | 22.14×13.34 mm |
| 16 ct | 22.63×13.63 mm |
| 17 ct | 23.09×13.91 mm |
| 18 ct | 23.52×14.17 mm |
| 19 ct | 23.95×14.43 mm |
| 20 ct | 24.37×14.68 mm |
| 22 ct | 25.15×15.15 mm |
| 24 ct | 25.9×15.6 mm |
| 26 ct | 26.59×16.02 mm |
| 28 ct | 27.26×16.42 mm |
| 30 ct | 27.9×16.81 mm |
| 33 ct | 28.8×17.35 mm |
| 36 ct | 29.65×17.86 mm |
| 40 ct | 30.71×18.5 mm |