Grey glass composition including erbium

摘要

A grey glass composition employing as its colorant portion at least iron (Fe2O3/FeO) and erbium oxide (e.g., Er2O3), and also preferably selenium and cobalt. An exemplary colorant portion for use in a glass composition (with a soda lime silica or other suitable base glass) includes, by weight percentage:The resulting glass may exhibit high visible transmittance (Lta), while at the same time low UV and IR transmittance.