color
Gold Ruby Glass
Glass colored red by colloidal gold, often via purple of Cassius preparations. Not ruby as the gem corundum, and not purple-of-cassius as the precipitating colorant alone.
Also known as Gold ruby glass · Gold-ruby glass
color
Glass colored red by colloidal gold, often via purple of Cassius preparations. Not ruby as the gem corundum, and not purple-of-cassius as the precipitating colorant alone.
Also known as Gold ruby glass · Gold-ruby glass