CONOSCOPE Interference Figure Sphere Conoscope lens with plastic holder - Interference sphere ball €15.00 Add to cart Buy
Gem Polariscope High metal quality polariscope mod. GEMPO-2 with two polarized filters €170.00 Add to cart Buy
CONOSCOPE Interference Figure Sphere - small Conoscope - Intereference sphere ball €7.00 Add to cart Buy
CALCITE DICHROSCOPE Calcite Plus Dichroscope to determine Dichroism and Pleochroism of transparent, colored gems as an aid to identify them. €60.00 Add to cart Buy