Recycled Glass Cluster Lamps from Swank Lighting's "Rock Candy" USA 21st. Century These beautiful glass cluster lamps in Clear Ice are from the "Rock Candy" Lighting Collection at Swank Lighting. The lamps are made of tumbled recycled glass, mounted on acrylic bases and built with solid brass hardware with a polished nickel finish. 25" to the top of double cluster socket. Available in various colors including Cola, Cobalt, Icy Blue, Fire Truck, Emerald Green, and Pink Grapefruit.