Oval-cut Sunstone Size Chart
Carat to mm size chart for oval-cut Sunstone, 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:
Sunstone Size Chart (Oval Cut)
0.25ct
5.54×3.69 mm
5.54×3.69 mm
0.5ct
6.98×4.65 mm
6.98×4.65 mm
0.75ct
8×5.33 mm
8×5.33 mm
1ct
8.79×5.86 mm
8.79×5.86 mm
1.25ct
9.48×6.32 mm
9.48×6.32 mm
1.5ct
10.07×6.71 mm
10.07×6.71 mm
1.75ct
10.61×7.07 mm
10.61×7.07 mm
2ct
11.09×7.39 mm
11.09×7.39 mm
2.5ct
11.94×7.96 mm
11.94×7.96 mm
3ct
12.69×8.46 mm
12.69×8.46 mm
3.5ct
13.35×8.9 mm
13.35×8.9 mm
4ct
13.97×9.31 mm
13.97×9.31 mm
4.5ct
14.52×9.68 mm
14.52×9.68 mm
5ct
15.05×10.03 mm
15.05×10.03 mm
5.5ct
15.53×10.35 mm
15.53×10.35 mm
6ct
15.98×10.65 mm
15.98×10.65 mm
6.5ct
16.41×10.94 mm
16.41×10.94 mm
7ct
16.83×11.22 mm
16.83×11.22 mm
7.5ct
17.22×11.48 mm
17.22×11.48 mm
8ct
17.6×11.73 mm
17.6×11.73 mm
8.5ct
17.96×11.97 mm
17.96×11.97 mm
9ct
18.3×12.2 mm
18.3×12.2 mm
9.5ct
18.63×12.42 mm
18.63×12.42 mm
10ct
18.95×12.63 mm
18.95×12.63 mm
11ct
19.56×13.04 mm
19.56×13.04 mm
12ct
20.13×13.42 mm
20.13×13.42 mm
13ct
20.69×13.79 mm
20.69×13.79 mm
14ct
21.2×14.13 mm
21.2×14.13 mm
15ct
21.69×14.46 mm
21.69×14.46 mm
16ct
22.16×14.77 mm
22.16×14.77 mm
17ct
22.62×15.08 mm
22.62×15.08 mm
18ct
23.06×15.37 mm
23.06×15.37 mm
19ct
23.48×15.65 mm
23.48×15.65 mm
20ct
23.88×15.92 mm
23.88×15.92 mm
22ct
24.65×16.43 mm
24.65×16.43 mm
24ct
25.37×16.91 mm
25.37×16.91 mm
26ct
26.06×17.37 mm
26.06×17.37 mm
28ct
26.7×17.8 mm
26.7×17.8 mm
30ct
27.33×18.22 mm
27.33×18.22 mm
33ct
28.22×18.81 mm
28.22×18.81 mm
36ct
29.04×19.36 mm
29.04×19.36 mm
40ct
30.08×20.05 mm
30.08×20.05 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 Sunstone carat weights to their approximate millimeter (mm) sizes:
| Carat Weight | MM Size |
|---|---|
| 0.25 ct | 5.54×3.69 mm |
| 0.5 ct | 6.98×4.65 mm |
| 0.75 ct | 8×5.33 mm |
| 1 ct | 8.79×5.86 mm |
| 1.25 ct | 9.48×6.32 mm |
| 1.5 ct | 10.07×6.71 mm |
| 1.75 ct | 10.61×7.07 mm |
| 2 ct | 11.09×7.39 mm |
| 2.5 ct | 11.94×7.96 mm |
| 3 ct | 12.69×8.46 mm |
| 3.5 ct | 13.35×8.9 mm |
| 4 ct | 13.97×9.31 mm |
| 4.5 ct | 14.52×9.68 mm |
| 5 ct | 15.05×10.03 mm |
| 5.5 ct | 15.53×10.35 mm |
| 6 ct | 15.98×10.65 mm |
| 6.5 ct | 16.41×10.94 mm |
| 7 ct | 16.83×11.22 mm |
| 7.5 ct | 17.22×11.48 mm |
| 8 ct | 17.6×11.73 mm |
| 8.5 ct | 17.96×11.97 mm |
| Carat Weight | MM Size |
|---|---|
| 9 ct | 18.3×12.2 mm |
| 9.5 ct | 18.63×12.42 mm |
| 10 ct | 18.95×12.63 mm |
| 11 ct | 19.56×13.04 mm |
| 12 ct | 20.13×13.42 mm |
| 13 ct | 20.69×13.79 mm |
| 14 ct | 21.2×14.13 mm |
| 15 ct | 21.69×14.46 mm |
| 16 ct | 22.16×14.77 mm |
| 17 ct | 22.62×15.08 mm |
| 18 ct | 23.06×15.37 mm |
| 19 ct | 23.48×15.65 mm |
| 20 ct | 23.88×15.92 mm |
| 22 ct | 24.65×16.43 mm |
| 24 ct | 25.37×16.91 mm |
| 26 ct | 26.06×17.37 mm |
| 28 ct | 26.7×17.8 mm |
| 30 ct | 27.33×18.22 mm |
| 33 ct | 28.22×18.81 mm |
| 36 ct | 29.04×19.36 mm |
| 40 ct | 30.08×20.05 mm |