N=1.523 MINERAL LENS
(1)UNCUST UNFINISHED Dia: 70mm white mineral lens n=1.523
Sphere: G2/G4/G6 Cylinder: G2/2 G4/2 G6/2
(2)Finished Dia65mm white mineral ens n=1.523
Sphere: G2/G4/G6 Cylinder: G2/2 G4/2 G6/2
(3)Semi-fnished mineral white flat top 28mm/65mm base 4 /base 6 lens