Marquise-cut Topaz Size Chart
Carat to mm size chart for marquise-cut Topaz, from 0.25ct to 40ct (at an L/W ratio of 2). 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:
Topaz Size Chart (Marquise Cut)
0.25ct
6.38×3.19 mm
6.38×3.19 mm
0.5ct
8.04×4.02 mm
8.04×4.02 mm
0.75ct
9.2×4.6 mm
9.2×4.6 mm
1ct
10.14×5.07 mm
10.14×5.07 mm
1.25ct
10.92×5.46 mm
10.92×5.46 mm
1.5ct
11.6×5.8 mm
11.6×5.8 mm
1.75ct
12.22×6.11 mm
12.22×6.11 mm
2ct
12.78×6.39 mm
12.78×6.39 mm
2.5ct
13.76×6.88 mm
13.76×6.88 mm
3ct
14.62×7.31 mm
14.62×7.31 mm
3.5ct
15.4×7.7 mm
15.4×7.7 mm
4ct
16.1×8.05 mm
16.1×8.05 mm
4.5ct
16.74×8.37 mm
16.74×8.37 mm
5ct
17.34×8.67 mm
17.34×8.67 mm
5.5ct
17.9×8.95 mm
17.9×8.95 mm
6ct
18.42×9.21 mm
18.42×9.21 mm
6.5ct
18.92×9.46 mm
18.92×9.46 mm
7ct
19.4×9.7 mm
19.4×9.7 mm
7.5ct
19.84×9.92 mm
19.84×9.92 mm
8ct
20.28×10.14 mm
20.28×10.14 mm
8.5ct
20.68×10.34 mm
20.68×10.34 mm
9ct
21.08×10.54 mm
21.08×10.54 mm
9.5ct
21.46×10.73 mm
21.46×10.73 mm
10ct
21.84×10.92 mm
21.84×10.92 mm
11ct
22.54×11.27 mm
22.54×11.27 mm
12ct
23.2×11.6 mm
23.2×11.6 mm
13ct
23.84×11.92 mm
23.84×11.92 mm
14ct
24.44×12.22 mm
24.44×12.22 mm
15ct
25×12.5 mm
25×12.5 mm
16ct
25.54×12.77 mm
25.54×12.77 mm
17ct
26.06×13.03 mm
26.06×13.03 mm
18ct
26.56×13.28 mm
26.56×13.28 mm
19ct
27.04×13.52 mm
27.04×13.52 mm
20ct
27.52×13.76 mm
27.52×13.76 mm
22ct
28.4×14.2 mm
28.4×14.2 mm
24ct
29.24×14.62 mm
29.24×14.62 mm
26ct
30.02×15.01 mm
30.02×15.01 mm
28ct
30.78×15.39 mm
30.78×15.39 mm
30ct
31.5×15.75 mm
31.5×15.75 mm
33ct
32.52×16.26 mm
32.52×16.26 mm
36ct
33.46×16.73 mm
33.46×16.73 mm
40ct
34.66×17.33 mm
34.66×17.33 mm
Length-to-width ratio: 2, 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 marquise-cut Topaz carat weights to their approximate millimeter (mm) sizes:
| Carat Weight | MM Size |
|---|---|
| 0.25 ct | 6.38×3.19 mm |
| 0.5 ct | 8.04×4.02 mm |
| 0.75 ct | 9.2×4.6 mm |
| 1 ct | 10.14×5.07 mm |
| 1.25 ct | 10.92×5.46 mm |
| 1.5 ct | 11.6×5.8 mm |
| 1.75 ct | 12.22×6.11 mm |
| 2 ct | 12.78×6.39 mm |
| 2.5 ct | 13.76×6.88 mm |
| 3 ct | 14.62×7.31 mm |
| 3.5 ct | 15.4×7.7 mm |
| 4 ct | 16.1×8.05 mm |
| 4.5 ct | 16.74×8.37 mm |
| 5 ct | 17.34×8.67 mm |
| 5.5 ct | 17.9×8.95 mm |
| 6 ct | 18.42×9.21 mm |
| 6.5 ct | 18.92×9.46 mm |
| 7 ct | 19.4×9.7 mm |
| 7.5 ct | 19.84×9.92 mm |
| 8 ct | 20.28×10.14 mm |
| 8.5 ct | 20.68×10.34 mm |
| Carat Weight | MM Size |
|---|---|
| 9 ct | 21.08×10.54 mm |
| 9.5 ct | 21.46×10.73 mm |
| 10 ct | 21.84×10.92 mm |
| 11 ct | 22.54×11.27 mm |
| 12 ct | 23.2×11.6 mm |
| 13 ct | 23.84×11.92 mm |
| 14 ct | 24.44×12.22 mm |
| 15 ct | 25×12.5 mm |
| 16 ct | 25.54×12.77 mm |
| 17 ct | 26.06×13.03 mm |
| 18 ct | 26.56×13.28 mm |
| 19 ct | 27.04×13.52 mm |
| 20 ct | 27.52×13.76 mm |
| 22 ct | 28.4×14.2 mm |
| 24 ct | 29.24×14.62 mm |
| 26 ct | 30.02×15.01 mm |
| 28 ct | 30.78×15.39 mm |
| 30 ct | 31.5×15.75 mm |
| 33 ct | 32.52×16.26 mm |
| 36 ct | 33.46×16.73 mm |
| 40 ct | 34.66×17.33 mm |