CNC Programming for Gemstone

I need a skilled CNC programmer to convert .STL files for a 5-axis CNC machine, specifically for machining semi-precious gemstones like amethyst.

Requirements:
- Convert .STL files for 5-axis CNC
- Experience with stone, especially semi-precious gemstones
- Knowledge of CNC programming and machining

Ideal Skills:
- CNC programming expertise
- Familiarity with amethyst and stone properties
- Attention to detail and precision