3. (Douault-Wiéland) Paste, 4608 gr.; green oxide of copper, 42 gr.; oxide of chrome, 2 gr.
4. (Lançon.) Paste, 9612 gr.; acetate of copper, 72 gr.; peroxide of iron, 11⁄2 gr.
Garnet. 1. Paste or strass, 1200 gr.; glass of antimony, 580 gr.; purple of cassius and binoxide of manganese, of each 3 gr.
2. (Douault-Wiéland.) Paste, 513 gr.; glass of antimony, 256 gr.; purple of cassius and oxide of manganese, of each 2 gr.
3. (Vinegar garnet.) From paste, 7000 gr.; glass of antimony, 3460 gr.; calcined peroxide of iron, 56 gr.
Lapis Lazuli. From paste, 7000 gr.; calcined horn or bones, 570 gr.; oxides of cobalt and manganese, of each 24 gr. The golden veins are produced by painting them on the pieces with a mixture of gold powder, borax, and gum water, and then gently heating them until the borax fluxes.
Opal. 1. From strass, 960 gr.; calcined bones, 48 gr.
2. (Fontanier.) Paste, 1 oz.; horn silver, 10 gr.; calcined magnetic ore, 2 gr.; absorbent earth (calcined bones), 26 gr.
Ruby. 1. Paste, 45 parts; binoxide of manganese, 1 part.
2. Paste, 1 lb.; purple of cassius, 3 dr.