Oval-cut Aquamarine Size Chart
Carat to mm size chart for oval-cut Aquamarine, 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:
Aquamarine Size Chart (Oval Cut)
0.25ct
5.49×3.66 mm
5.49×3.66 mm
0.5ct
6.92×4.61 mm
6.92×4.61 mm
0.75ct
7.92×5.28 mm
7.92×5.28 mm
1ct
8.72×5.81 mm
8.72×5.81 mm
1.25ct
9.39×6.26 mm
9.39×6.26 mm
1.5ct
9.98×6.65 mm
9.98×6.65 mm
1.75ct
10.5×7 mm
10.5×7 mm
2ct
10.98×7.32 mm
10.98×7.32 mm
2.5ct
11.84×7.89 mm
11.84×7.89 mm
3ct
12.57×8.38 mm
12.57×8.38 mm
3.5ct
13.25×8.83 mm
13.25×8.83 mm
4ct
13.85×9.23 mm
13.85×9.23 mm
4.5ct
14.4×9.6 mm
14.4×9.6 mm
5ct
14.91×9.94 mm
14.91×9.94 mm
5.5ct
15.39×10.26 mm
15.39×10.26 mm
6ct
15.84×10.56 mm
15.84×10.56 mm
6.5ct
16.28×10.85 mm
16.28×10.85 mm
7ct
16.68×11.12 mm
16.68×11.12 mm
7.5ct
17.07×11.38 mm
17.07×11.38 mm
8ct
17.45×11.63 mm
17.45×11.63 mm
8.5ct
17.79×11.86 mm
17.79×11.86 mm
9ct
18.14×12.09 mm
18.14×12.09 mm
9.5ct
18.47×12.31 mm
18.47×12.31 mm
10ct
18.78×12.52 mm
18.78×12.52 mm
11ct
19.4×12.93 mm
19.4×12.93 mm
12ct
19.97×13.31 mm
19.97×13.31 mm
13ct
20.51×13.67 mm
20.51×13.67 mm
14ct
21.02×14.01 mm
21.02×14.01 mm
15ct
21.51×14.34 mm
21.51×14.34 mm
16ct
21.98×14.65 mm
21.98×14.65 mm
17ct
22.43×14.95 mm
22.43×14.95 mm
18ct
22.85×15.23 mm
22.85×15.23 mm
19ct
23.27×15.51 mm
23.27×15.51 mm
20ct
23.67×15.78 mm
23.67×15.78 mm
22ct
24.44×16.29 mm
24.44×16.29 mm
24ct
25.16×16.77 mm
25.16×16.77 mm
26ct
25.83×17.22 mm
25.83×17.22 mm
28ct
26.48×17.65 mm
26.48×17.65 mm
30ct
27.09×18.06 mm
27.09×18.06 mm
33ct
27.96×18.64 mm
27.96×18.64 mm
36ct
28.79×19.19 mm
28.79×19.19 mm
40ct
29.82×19.88 mm
29.82×19.88 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 Aquamarine carat weights to their approximate millimeter (mm) sizes:
| Carat Weight | MM Size |
|---|---|
| 0.25 ct | 5.49×3.66 mm |
| 0.5 ct | 6.92×4.61 mm |
| 0.75 ct | 7.92×5.28 mm |
| 1 ct | 8.72×5.81 mm |
| 1.25 ct | 9.39×6.26 mm |
| 1.5 ct | 9.98×6.65 mm |
| 1.75 ct | 10.5×7 mm |
| 2 ct | 10.98×7.32 mm |
| 2.5 ct | 11.84×7.89 mm |
| 3 ct | 12.57×8.38 mm |
| 3.5 ct | 13.25×8.83 mm |
| 4 ct | 13.85×9.23 mm |
| 4.5 ct | 14.4×9.6 mm |
| 5 ct | 14.91×9.94 mm |
| 5.5 ct | 15.39×10.26 mm |
| 6 ct | 15.84×10.56 mm |
| 6.5 ct | 16.28×10.85 mm |
| 7 ct | 16.68×11.12 mm |
| 7.5 ct | 17.07×11.38 mm |
| 8 ct | 17.45×11.63 mm |
| 8.5 ct | 17.79×11.86 mm |
| Carat Weight | MM Size |
|---|---|
| 9 ct | 18.14×12.09 mm |
| 9.5 ct | 18.47×12.31 mm |
| 10 ct | 18.78×12.52 mm |
| 11 ct | 19.4×12.93 mm |
| 12 ct | 19.97×13.31 mm |
| 13 ct | 20.51×13.67 mm |
| 14 ct | 21.02×14.01 mm |
| 15 ct | 21.51×14.34 mm |
| 16 ct | 21.98×14.65 mm |
| 17 ct | 22.43×14.95 mm |
| 18 ct | 22.85×15.23 mm |
| 19 ct | 23.27×15.51 mm |
| 20 ct | 23.67×15.78 mm |
| 22 ct | 24.44×16.29 mm |
| 24 ct | 25.16×16.77 mm |
| 26 ct | 25.83×17.22 mm |
| 28 ct | 26.48×17.65 mm |
| 30 ct | 27.09×18.06 mm |
| 33 ct | 27.96×18.64 mm |
| 36 ct | 28.79×19.19 mm |
| 40 ct | 29.82×19.88 mm |