| Color
| Natural Swiss Blue Topaz |
| Size
| 1.00-3.00mm
|
Shape
| Round brilliant cut, pointed back
|
Material
| Natural topaz
|
Mohs Scale
|
8 |
Reflective Index
| 1.619-1.627 |
Grade
| Top machine cut
|
Temperature resistance (highest limit)
| °C
|
Remark
| Can be used for wax setting
|