Marquise-cut Cubic Zirconia Size Chart
Carat to mm size chart for marquise-cut Cubic Zirconia, 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:
Cubic Zirconia Size Chart (Marquise Cut)
0.25ct
5.46×2.73 mm
5.46×2.73 mm
0.5ct
6.88×3.44 mm
6.88×3.44 mm
0.75ct
7.88×3.94 mm
7.88×3.94 mm
1ct
8.66×4.33 mm
8.66×4.33 mm
1.25ct
9.34×4.67 mm
9.34×4.67 mm
1.5ct
9.92×4.96 mm
9.92×4.96 mm
1.75ct
10.44×5.22 mm
10.44×5.22 mm
2ct
10.92×5.46 mm
10.92×5.46 mm
2.5ct
11.76×5.88 mm
11.76×5.88 mm
3ct
12.5×6.25 mm
12.5×6.25 mm
3.5ct
13.16×6.58 mm
13.16×6.58 mm
4ct
13.76×6.88 mm
13.76×6.88 mm
4.5ct
14.3×7.15 mm
14.3×7.15 mm
5ct
14.82×7.41 mm
14.82×7.41 mm
5.5ct
15.3×7.65 mm
15.3×7.65 mm
6ct
15.74×7.87 mm
15.74×7.87 mm
6.5ct
16.18×8.09 mm
16.18×8.09 mm
7ct
16.58×8.29 mm
16.58×8.29 mm
7.5ct
16.96×8.48 mm
16.96×8.48 mm
8ct
17.34×8.67 mm
17.34×8.67 mm
8.5ct
17.68×8.84 mm
17.68×8.84 mm
9ct
18.02×9.01 mm
18.02×9.01 mm
9.5ct
18.36×9.18 mm
18.36×9.18 mm
10ct
18.66×9.33 mm
18.66×9.33 mm
11ct
19.28×9.64 mm
19.28×9.64 mm
12ct
19.84×9.92 mm
19.84×9.92 mm
13ct
20.38×10.19 mm
20.38×10.19 mm
14ct
20.88×10.44 mm
20.88×10.44 mm
15ct
21.38×10.69 mm
21.38×10.69 mm
16ct
21.84×10.92 mm
21.84×10.92 mm
17ct
22.28×11.14 mm
22.28×11.14 mm
18ct
22.72×11.36 mm
22.72×11.36 mm
19ct
23.12×11.56 mm
23.12×11.56 mm
20ct
23.52×11.76 mm
23.52×11.76 mm
22ct
24.28×12.14 mm
24.28×12.14 mm
24ct
25×12.5 mm
25×12.5 mm
26ct
25.68×12.84 mm
25.68×12.84 mm
28ct
26.32×13.16 mm
26.32×13.16 mm
30ct
26.92×13.46 mm
26.92×13.46 mm
33ct
27.8×13.9 mm
27.8×13.9 mm
36ct
28.62×14.31 mm
28.62×14.31 mm
40ct
29.64×14.82 mm
29.64×14.82 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 Cubic Zirconia carat weights to their approximate millimeter (mm) sizes:
| Carat Weight | MM Size |
|---|---|
| 0.25 ct | 5.46×2.73 mm |
| 0.5 ct | 6.88×3.44 mm |
| 0.75 ct | 7.88×3.94 mm |
| 1 ct | 8.66×4.33 mm |
| 1.25 ct | 9.34×4.67 mm |
| 1.5 ct | 9.92×4.96 mm |
| 1.75 ct | 10.44×5.22 mm |
| 2 ct | 10.92×5.46 mm |
| 2.5 ct | 11.76×5.88 mm |
| 3 ct | 12.5×6.25 mm |
| 3.5 ct | 13.16×6.58 mm |
| 4 ct | 13.76×6.88 mm |
| 4.5 ct | 14.3×7.15 mm |
| 5 ct | 14.82×7.41 mm |
| 5.5 ct | 15.3×7.65 mm |
| 6 ct | 15.74×7.87 mm |
| 6.5 ct | 16.18×8.09 mm |
| 7 ct | 16.58×8.29 mm |
| 7.5 ct | 16.96×8.48 mm |
| 8 ct | 17.34×8.67 mm |
| 8.5 ct | 17.68×8.84 mm |
| Carat Weight | MM Size |
|---|---|
| 9 ct | 18.02×9.01 mm |
| 9.5 ct | 18.36×9.18 mm |
| 10 ct | 18.66×9.33 mm |
| 11 ct | 19.28×9.64 mm |
| 12 ct | 19.84×9.92 mm |
| 13 ct | 20.38×10.19 mm |
| 14 ct | 20.88×10.44 mm |
| 15 ct | 21.38×10.69 mm |
| 16 ct | 21.84×10.92 mm |
| 17 ct | 22.28×11.14 mm |
| 18 ct | 22.72×11.36 mm |
| 19 ct | 23.12×11.56 mm |
| 20 ct | 23.52×11.76 mm |
| 22 ct | 24.28×12.14 mm |
| 24 ct | 25×12.5 mm |
| 26 ct | 25.68×12.84 mm |
| 28 ct | 26.32×13.16 mm |
| 30 ct | 26.92×13.46 mm |
| 33 ct | 27.8×13.9 mm |
| 36 ct | 28.62×14.31 mm |
| 40 ct | 29.64×14.82 mm |