London dichroscope
The device is used to detect pleochroism of transparent stones in cut
or rough condition. It is suitable for stones that show medium to
strong pleochroism. The instrument works through two
polarizing filters, each oriented at 90° to each other.
Technical details:
- Dimensions (W×W): 40mm x 50mm
- Lens with polarizing filters: Ø 20 mm
- Weight: 20g
- Synthetic leather case
- Metal body