Acrylic Ice Rock Cubes Vase Filler or Table Decorating Idea- Clear (900 Pieces) Translucent Clear Acrylic Ice Rocks for Vase Fillers or Table Scatters. Price is for a package of approximately 900 gems. Acrylic crystal gems look like crushed ice in assorted shapes. Drop them into vases, bowls, flower arrangements or scatter onto table. Ice rocks do not float, and refract light in all directions. Each crystal measures approximately 0.5 inches so please purchase accordingly for your needs.