Plate cut from tourmaline uniaxial crystal

Plate cut from anhydrite biaxial crystal

Plate cut from barytes biaxial crystal

Plate cut from 0.5mm calcite uniaxial crystal

Plate cut from 3mm calcite uniaxial crystal

Plate cut from dioptase uniaxial crystal

Plate cut from brucite uniaxial crystal

Plate cut from zircon uniaxial crystal

Plate cut from 1mm calcite uniaxial crystal

Plate cut from meionite uniaxial crystal

Plate cut from hemitrope calcite uniaxial crystal

Plate cut from adularia biaxial crystal

Plate cut from aragonite biaxial crystal

Plate cut from axinite biaxial crystal

Plate cut from 8mm quartz uniaxial crystal

Plate cut from apophyllite uniaxial crystal

Plate cut from beryl uniaxial crystal

Plate cut from apatite uniaxial crystal

Plate cut from right-handed quartz uniaxial crystal

Plate cut from corundum uniaxial crystal

Plate cut from left-handed quartz uniaxial crystal

Carton of lamp bulbs as used with Polariscope equipment

1955-1970