MONOCRYSTAL JEWELRY MATERIAL ON THE BASE OF GADOLINIUM-GALLIUM GARNET Russian patent published in 1994 - IPC

FIELD: production of artificial monocrystals. SUBSTANCE: proposed material on the base of gadolinium-gallium monocrystal having formula Gd₃Ga₅O₁₂ contains cobalt and zirconium as color additives at quantities 0.001-0.5 mass % and 0.001-0.6 mass % respectively. Total quantity of said additives is not more 0.8 mass %. Proposed crystals have diameter 35 mm, their weight being approximately 350 g. EFFECT: desired monocrystals have predetermined brightness and uniform color throughout its whole volume. 1 tbl