Radiant-cut Zircon Size Chart
Carat to mm size chart for radiant-cut Zircon, from 0.25ct to 40ct. 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 (Radiant Cut)
0.25ct
3.29×3.29 mm
3.29×3.29 mm
0.5ct
4.14×4.14 mm
4.14×4.14 mm
0.75ct
4.74×4.74 mm
4.74×4.74 mm
1ct
5.22×5.22 mm
5.22×5.22 mm
1.25ct
5.62×5.62 mm
5.62×5.62 mm
1.5ct
5.98×5.98 mm
5.98×5.98 mm
1.75ct
6.29×6.29 mm
6.29×6.29 mm
2ct
6.58×6.58 mm
6.58×6.58 mm
2.5ct
7.09×7.09 mm
7.09×7.09 mm
3ct
7.53×7.53 mm
7.53×7.53 mm
3.5ct
7.93×7.93 mm
7.93×7.93 mm
4ct
8.29×8.29 mm
8.29×8.29 mm
4.5ct
8.62×8.62 mm
8.62×8.62 mm
5ct
8.93×8.93 mm
8.93×8.93 mm
5.5ct
9.22×9.22 mm
9.22×9.22 mm
6ct
9.49×9.49 mm
9.49×9.49 mm
6.5ct
9.74×9.74 mm
9.74×9.74 mm
7ct
9.99×9.99 mm
9.99×9.99 mm
7.5ct
10.22×10.22 mm
10.22×10.22 mm
8ct
10.44×10.44 mm
10.44×10.44 mm
8.5ct
10.66×10.66 mm
10.66×10.66 mm
9ct
10.86×10.86 mm
10.86×10.86 mm
9.5ct
11.06×11.06 mm
11.06×11.06 mm
10ct
11.25×11.25 mm
11.25×11.25 mm
11ct
11.61×11.61 mm
11.61×11.61 mm
12ct
11.95×11.95 mm
11.95×11.95 mm
13ct
12.28×12.28 mm
12.28×12.28 mm
14ct
12.58×12.58 mm
12.58×12.58 mm
15ct
12.88×12.88 mm
12.88×12.88 mm
16ct
13.16×13.16 mm
13.16×13.16 mm
17ct
13.42×13.42 mm
13.42×13.42 mm
18ct
13.68×13.68 mm
13.68×13.68 mm
19ct
13.93×13.93 mm
13.93×13.93 mm
20ct
14.17×14.17 mm
14.17×14.17 mm
22ct
14.63×14.63 mm
14.63×14.63 mm
24ct
15.06×15.06 mm
15.06×15.06 mm
26ct
15.47×15.47 mm
15.47×15.47 mm
28ct
15.85×15.85 mm
15.85×15.85 mm
30ct
16.22×16.22 mm
16.22×16.22 mm
33ct
16.75×16.75 mm
16.75×16.75 mm
36ct
17.24×17.24 mm
17.24×17.24 mm
40ct
17.86×17.86 mm
17.86×17.86 mm
Length-to-width ratio: 1, 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 radiant-cut Zircon carat weights to their approximate millimeter (mm) sizes:
| Carat Weight | MM Size |
|---|---|
| 0.25 ct | 3.29×3.29 mm |
| 0.5 ct | 4.14×4.14 mm |
| 0.75 ct | 4.74×4.74 mm |
| 1 ct | 5.22×5.22 mm |
| 1.25 ct | 5.62×5.62 mm |
| 1.5 ct | 5.98×5.98 mm |
| 1.75 ct | 6.29×6.29 mm |
| 2 ct | 6.58×6.58 mm |
| 2.5 ct | 7.09×7.09 mm |
| 3 ct | 7.53×7.53 mm |
| 3.5 ct | 7.93×7.93 mm |
| 4 ct | 8.29×8.29 mm |
| 4.5 ct | 8.62×8.62 mm |
| 5 ct | 8.93×8.93 mm |
| 5.5 ct | 9.22×9.22 mm |
| 6 ct | 9.49×9.49 mm |
| 6.5 ct | 9.74×9.74 mm |
| 7 ct | 9.99×9.99 mm |
| 7.5 ct | 10.22×10.22 mm |
| 8 ct | 10.44×10.44 mm |
| 8.5 ct | 10.66×10.66 mm |
| Carat Weight | MM Size |
|---|---|
| 9 ct | 10.86×10.86 mm |
| 9.5 ct | 11.06×11.06 mm |
| 10 ct | 11.25×11.25 mm |
| 11 ct | 11.61×11.61 mm |
| 12 ct | 11.95×11.95 mm |
| 13 ct | 12.28×12.28 mm |
| 14 ct | 12.58×12.58 mm |
| 15 ct | 12.88×12.88 mm |
| 16 ct | 13.16×13.16 mm |
| 17 ct | 13.42×13.42 mm |
| 18 ct | 13.68×13.68 mm |
| 19 ct | 13.93×13.93 mm |
| 20 ct | 14.17×14.17 mm |
| 22 ct | 14.63×14.63 mm |
| 24 ct | 15.06×15.06 mm |
| 26 ct | 15.47×15.47 mm |
| 28 ct | 15.85×15.85 mm |
| 30 ct | 16.22×16.22 mm |
| 33 ct | 16.75×16.75 mm |
| 36 ct | 17.24×17.24 mm |
| 40 ct | 17.86×17.86 mm |