A BEAUTIFUL, CLASSIC and OLD-TIME curved Bisbee crust of highly lustrous, botryoidal, midnight-blue azurite. Very showy bonuses on the underside are individual azurite crystals accented with chatoyant primary malachite crystals! Ex. Scott Turner and Seaman Museum Collections. Dr. Turner was the Director of the United States Bureau of Mines in the 1920s and his extensive collection was bequeathed to the Seaman, after his death in 1972.