Oval-cut Diopside Size Chart
Carat to mm size chart for oval-cut Diopside, 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:
Diopside Size Chart (Oval Cut)
0.25ct
5.15×3.43 mm
5.15×3.43 mm
0.5ct
6.5×4.33 mm
6.5×4.33 mm
0.75ct
7.43×4.95 mm
7.43×4.95 mm
1ct
8.18×5.45 mm
8.18×5.45 mm
1.25ct
8.81×5.87 mm
8.81×5.87 mm
1.5ct
9.36×6.24 mm
9.36×6.24 mm
1.75ct
9.86×6.57 mm
9.86×6.57 mm
2ct
10.31×6.87 mm
10.31×6.87 mm
2.5ct
11.1×7.4 mm
11.1×7.4 mm
3ct
11.79×7.86 mm
11.79×7.86 mm
3.5ct
12.41×8.27 mm
12.41×8.27 mm
4ct
12.98×8.65 mm
12.98×8.65 mm
4.5ct
13.5×9 mm
13.5×9 mm
5ct
13.98×9.32 mm
13.98×9.32 mm
5.5ct
14.43×9.62 mm
14.43×9.62 mm
6ct
14.85×9.9 mm
14.85×9.9 mm
6.5ct
15.26×10.17 mm
15.26×10.17 mm
7ct
15.65×10.43 mm
15.65×10.43 mm
7.5ct
16.01×10.67 mm
16.01×10.67 mm
8ct
16.35×10.9 mm
16.35×10.9 mm
8.5ct
16.68×11.12 mm
16.68×11.12 mm
9ct
17.01×11.34 mm
17.01×11.34 mm
9.5ct
17.31×11.54 mm
17.31×11.54 mm
10ct
17.61×11.74 mm
17.61×11.74 mm
11ct
18.18×12.12 mm
18.18×12.12 mm
12ct
18.72×12.48 mm
18.72×12.48 mm
13ct
19.22×12.81 mm
19.22×12.81 mm
14ct
19.71×13.14 mm
19.71×13.14 mm
15ct
20.16×13.44 mm
20.16×13.44 mm
16ct
20.6×13.73 mm
20.6×13.73 mm
17ct
21.02×14.01 mm
21.02×14.01 mm
18ct
21.42×14.28 mm
21.42×14.28 mm
19ct
21.81×14.54 mm
21.81×14.54 mm
20ct
22.19×14.79 mm
22.19×14.79 mm
22ct
22.91×15.27 mm
22.91×15.27 mm
24ct
23.58×15.72 mm
23.58×15.72 mm
26ct
24.23×16.15 mm
24.23×16.15 mm
28ct
24.83×16.55 mm
24.83×16.55 mm
30ct
25.4×16.93 mm
25.4×16.93 mm
33ct
26.22×17.48 mm
26.22×17.48 mm
36ct
27×18 mm
27×18 mm
40ct
27.96×18.64 mm
27.96×18.64 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 Diopside carat weights to their approximate millimeter (mm) sizes:
| Carat Weight | MM Size |
|---|---|
| 0.25 ct | 5.15×3.43 mm |
| 0.5 ct | 6.5×4.33 mm |
| 0.75 ct | 7.43×4.95 mm |
| 1 ct | 8.18×5.45 mm |
| 1.25 ct | 8.81×5.87 mm |
| 1.5 ct | 9.36×6.24 mm |
| 1.75 ct | 9.86×6.57 mm |
| 2 ct | 10.31×6.87 mm |
| 2.5 ct | 11.1×7.4 mm |
| 3 ct | 11.79×7.86 mm |
| 3.5 ct | 12.41×8.27 mm |
| 4 ct | 12.98×8.65 mm |
| 4.5 ct | 13.5×9 mm |
| 5 ct | 13.98×9.32 mm |
| 5.5 ct | 14.43×9.62 mm |
| 6 ct | 14.85×9.9 mm |
| 6.5 ct | 15.26×10.17 mm |
| 7 ct | 15.65×10.43 mm |
| 7.5 ct | 16.01×10.67 mm |
| 8 ct | 16.35×10.9 mm |
| 8.5 ct | 16.68×11.12 mm |
| Carat Weight | MM Size |
|---|---|
| 9 ct | 17.01×11.34 mm |
| 9.5 ct | 17.31×11.54 mm |
| 10 ct | 17.61×11.74 mm |
| 11 ct | 18.18×12.12 mm |
| 12 ct | 18.72×12.48 mm |
| 13 ct | 19.22×12.81 mm |
| 14 ct | 19.71×13.14 mm |
| 15 ct | 20.16×13.44 mm |
| 16 ct | 20.6×13.73 mm |
| 17 ct | 21.02×14.01 mm |
| 18 ct | 21.42×14.28 mm |
| 19 ct | 21.81×14.54 mm |
| 20 ct | 22.19×14.79 mm |
| 22 ct | 22.91×15.27 mm |
| 24 ct | 23.58×15.72 mm |
| 26 ct | 24.23×16.15 mm |
| 28 ct | 24.83×16.55 mm |
| 30 ct | 25.4×16.93 mm |
| 33 ct | 26.22×17.48 mm |
| 36 ct | 27×18 mm |
| 40 ct | 27.96×18.64 mm |