Copper, importance of, in colouring of ancient glass, [26], [35 note]
Copper, the red suboxide in Egyptian glass, [27-28]
Copper, the red suboxide in Roman glass, [52-53]
Coptic glass from Egypt, [105]
Coptic churches, lamps from, [106]
Coptos, enamelled glass cup from, [163]
Corundum or emery used in cutting glass, [74 note]
Cosmati mosaics, [140]
Crackle or frosted glass of Venice, [203]
Crimea, primitive glass from, [37]