Busen Agate Coaster Purple Cup Mat 3.5 to 4- Inch, Set of 4 Teal Purple Brilliant Brazilian Agate Coasters. Random Pattern Colors Vary. Hand Chosen for Quality, Pattern, Symmetry and Colors Definition, Polished Both Sides. Makes a Great Display Piece Unique Decorative Item for Entertaining. Premium Quality, Polished One-of-a-Kind Natural Brazilian Agate Slices. Great Gift!