Marquise-cut Zircon Size Chart
Carat to mm size chart for marquise-cut Zircon, 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:
Zircon Size Chart (Marquise Cut)
0.25ct
5.8×2.9 mm
5.8×2.9 mm
0.5ct
7.32×3.66 mm
7.32×3.66 mm
0.75ct
8.38×4.19 mm
8.38×4.19 mm
1ct
9.22×4.61 mm
9.22×4.61 mm
1.25ct
9.92×4.96 mm
9.92×4.96 mm
1.5ct
10.54×5.27 mm
10.54×5.27 mm
1.75ct
11.1×5.55 mm
11.1×5.55 mm
2ct
11.6×5.8 mm
11.6×5.8 mm
2.5ct
12.5×6.25 mm
12.5×6.25 mm
3ct
13.28×6.64 mm
13.28×6.64 mm
3.5ct
13.98×6.99 mm
13.98×6.99 mm
4ct
14.62×7.31 mm
14.62×7.31 mm
4.5ct
15.22×7.61 mm
15.22×7.61 mm
5ct
15.76×7.88 mm
15.76×7.88 mm
5.5ct
16.26×8.13 mm
16.26×8.13 mm
6ct
16.74×8.37 mm
16.74×8.37 mm
6.5ct
17.2×8.6 mm
17.2×8.6 mm
7ct
17.62×8.81 mm
17.62×8.81 mm
7.5ct
18.04×9.02 mm
18.04×9.02 mm
8ct
18.42×9.21 mm
18.42×9.21 mm
8.5ct
18.8×9.4 mm
18.8×9.4 mm
9ct
19.16×9.58 mm
19.16×9.58 mm
9.5ct
19.52×9.76 mm
19.52×9.76 mm
10ct
19.86×9.93 mm
19.86×9.93 mm
11ct
20.5×10.25 mm
20.5×10.25 mm
12ct
21.1×10.55 mm
21.1×10.55 mm
13ct
21.66×10.83 mm
21.66×10.83 mm
14ct
22.2×11.1 mm
22.2×11.1 mm
15ct
22.72×11.36 mm
22.72×11.36 mm
16ct
23.22×11.61 mm
23.22×11.61 mm
17ct
23.7×11.85 mm
23.7×11.85 mm
18ct
24.14×12.07 mm
24.14×12.07 mm
19ct
24.58×12.29 mm
24.58×12.29 mm
20ct
25.02×12.51 mm
25.02×12.51 mm
22ct
25.82×12.91 mm
25.82×12.91 mm
24ct
26.58×13.29 mm
26.58×13.29 mm
26ct
27.3×13.65 mm
27.3×13.65 mm
28ct
27.98×13.99 mm
27.98×13.99 mm
30ct
28.62×14.31 mm
28.62×14.31 mm
33ct
29.56×14.78 mm
29.56×14.78 mm
36ct
30.42×15.21 mm
30.42×15.21 mm
40ct
31.52×15.76 mm
31.52×15.76 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 Zircon carat weights to their approximate millimeter (mm) sizes:
| Carat Weight | MM Size |
|---|---|
| 0.25 ct | 5.8×2.9 mm |
| 0.5 ct | 7.32×3.66 mm |
| 0.75 ct | 8.38×4.19 mm |
| 1 ct | 9.22×4.61 mm |
| 1.25 ct | 9.92×4.96 mm |
| 1.5 ct | 10.54×5.27 mm |
| 1.75 ct | 11.1×5.55 mm |
| 2 ct | 11.6×5.8 mm |
| 2.5 ct | 12.5×6.25 mm |
| 3 ct | 13.28×6.64 mm |
| 3.5 ct | 13.98×6.99 mm |
| 4 ct | 14.62×7.31 mm |
| 4.5 ct | 15.22×7.61 mm |
| 5 ct | 15.76×7.88 mm |
| 5.5 ct | 16.26×8.13 mm |
| 6 ct | 16.74×8.37 mm |
| 6.5 ct | 17.2×8.6 mm |
| 7 ct | 17.62×8.81 mm |
| 7.5 ct | 18.04×9.02 mm |
| 8 ct | 18.42×9.21 mm |
| 8.5 ct | 18.8×9.4 mm |
| Carat Weight | MM Size |
|---|---|
| 9 ct | 19.16×9.58 mm |
| 9.5 ct | 19.52×9.76 mm |
| 10 ct | 19.86×9.93 mm |
| 11 ct | 20.5×10.25 mm |
| 12 ct | 21.1×10.55 mm |
| 13 ct | 21.66×10.83 mm |
| 14 ct | 22.2×11.1 mm |
| 15 ct | 22.72×11.36 mm |
| 16 ct | 23.22×11.61 mm |
| 17 ct | 23.7×11.85 mm |
| 18 ct | 24.14×12.07 mm |
| 19 ct | 24.58×12.29 mm |
| 20 ct | 25.02×12.51 mm |
| 22 ct | 25.82×12.91 mm |
| 24 ct | 26.58×13.29 mm |
| 26 ct | 27.3×13.65 mm |
| 28 ct | 27.98×13.99 mm |
| 30 ct | 28.62×14.31 mm |
| 33 ct | 29.56×14.78 mm |
| 36 ct | 30.42×15.21 mm |
| 40 ct | 31.52×15.76 mm |