With over 26 years of experience, Clear Align can fabricate your optical components including spherical, aspherical, flats, and prisms. The standard specifications of our optical fabrication facility are: Optical Fabrication and Polishing, All common & uncommon glass materials (From BK7 LaSFN SiO2 etc to Sapphire & Silicon.) Additionally we can generate and polish ceramics & crystals. Scratch-Dig: Common 20-10 Best 10-5 Surface Quality to 5 Angstroms.