Gemologists typically use either a 
stereo microscope or a 
gemological microscope when viewing precious stones or gems. A 
gem clamp is used to hold the stone in place and often 
darkfield illumination is used to direct the light around the precious stone.
These gems were captured under a 
Richter Optica S6 LCD tablet camera stereo microscope using 7x magnification.
  | 
| Precious stone captured under stereo zoom microscope. |