1) Refractive index ND: 1.523 2) Density: 2.533 3) Abbe number: 60.5 4) Visible light transmission rate: 92% 5) 1.523 single vision lenses Color: White, Pink, Photo brown, Photo grey Diameter: 56mm, 60mm, 65mm Powers: a) For 56mm/60mm Sph: 0.00 to +/-6.00 b) For 65mm Sph: 0.00 to +/-6.00 / Cyl: +/-0.25 to +/-2.00 RX Power: Sph: 0.00 to +/-6.00 / Cyl: +/-2.25 to +/-4.00 6) Uncoating, Multi-coated(AR), AR&EMI treatment available in greenish and bluish color 7) Both finished and semi finished 8) Semi-finished lenses Base: 1.00, 2.00, 3.00, 4.00, 5.00, 6.00 Skype: clearoptical