What is another word for "vitreous"?

Roget's Thesaurus (1911) lists these synonyms for "vitreous": adamant, adamantean, adamantine, block, board, bone, bony, brick, buckram, calculous, callosity, cartilage, cartilaginous, cast, cement, clarity, clear, concrete, corneous, crag, crystal, crystalline, crystallization, deal, diaphaneity, diaphanous, durity, firm, flint, fluorescence, fossil, glass, glassy, granite, granitic, gritty, hard, harden, hardness, hardware.