a coloring agent made of blue glass produced by fusing silica, potassium carbonate, and cobalt oxide, used in powdered form to add color to vitreous materials.
a type of silica glass coloured deep blue with cobalt oxide
a pigment made by crushing this glass, used in colouring enamels
the blue colour of this pigment
noun 1. a mineral, originally thought to have been a diarsenide of cobalt, CoAs 2 , but which is actually a skutterudite rich in cobalt. noun 1. a silver-white to greyish mineral consisting chiefly of cobalt arsenide with nickel in cubic crystalline form. It occurs in veins associated with silver, nickel, and copper minerals, and […]
noun, plural smaltos Italian, smalti [zmahl-tee] /ˈzmɑl ti/ (Show IPA) 1. colored glass or similar vitreous material used in mosaic. 2. a piece of this. noun (pl) -tos, -ti (-tiː) 1. coloured glass, etc, used in mosaics
noun, Rare. 1. emerald. noun 1. (archaic) any green gemstone, such as the emerald
adjective 1. of or relating to emeralds. 2. emerald-green in color. noun 3. Rare. smaragd.