Potassium chloride crystal optic rectangle, 30mm x 15mm x 4mm, unpolished

Potassium chloride crystal optic rectangle, 38.5mm x 19.5mm x 4mm, unpolished

Potassium chloride crystal optic rectangle, 41mm x 23mm x 6mm, unpolished

Potassium bromide crystal optic rectangle, 30mm x 15mm x 4mm, unpolished

Potassium bromide crystal optic rectangle, 38.5mm x 19.5mm x 4mm, unpolished

Potassium bromide crystal optic rectangle, 41mm x 23mm x 6mm, unpolished

Sodium chloride crystal optic disc, 13mm x 2mm, polished both sides Login For Price

Sodium chloride crystal optic disc, 22mm x 4mm, polished both sides Login For Price

Sodium chloride crystal optic disc, 25mm x 4mm, polished both sides Login For Price

Sodium chloride crystal optic disc, 32mm x 3mm, polished both sides Login For Price

Sodium chloride crystal optic disc, 32mm x 3mm (drilled), polished both sides Login For Price

Potassium chloride crystal optic disc, 13mm x 2mm, polished both sides