| Gem | Gem | Base gem | Mesh |
| Girdle | Girdle | Base girdle | Curve |
| Top curve | TopC | Optional closed planar curve to define the upper boundary | Curve |
| Bottom curve | BotC | Optional closed planar curve to define the bottom boundary | Curve |
| Girdle height | GrdlH | Height at girdle | Number |
| Upper depth | TopD | Upper depth (between 0 and 1) | Number |
| Bottom depth | BotD | Bottom depth (between 0 and 1) | Number |
| Upper scale | TopS | Upper scale | Number |
| Bottom scale | BotS | Bottom scale | Number |
| Upper height | TopH | Upper height | Number |
| Bottom height | BotH | Bottom height | Number |
| Elevation | Elev | Move the cutter in normal direction | Number |