Conant’s 1.74 high index series uses MR-174™ raw materials from Japan's Mitsui Chemicals, which is a super high index and light lens material.  Its excellent optical performance allows users to experience comfort and lightness, at the same time it improves color reproduction and clarity.

Biomass Degree: 80-90%

R.l.(ne): 1.74

Abbe Number(ve): 33

Specific Gravity: 1.47

Tintability: ok

Impact Resistance: ok