Roost Fluorite CoastersThese exquisite coasters can bring natural elegance to any party. Roost's Fluorite Collection, draws its name from water flows. This richly veined mineral ranges in color from vibrant sea green to violet, often within the same stone. The crystals form in a cubic pattern, giving each stone a unique and interesting internal design. All pieces are sold as free form or rectangular slabs or coaster sized shapes. Each piece has a rough cut edge and polished