The Royal Gift Shop Single Authentic Brazilian Agate Slice with Silver Plated Rim - Protective Rubber Bumpers and Certified Agate Card Included. Natural (5"-6") Premium Quality, Polished One-of-a-Kind Natural Brazilian Agate Slices. Hand Chosen for Quality, Pattern, Symmetry and Color Definition. Each coaster is unique due to naturally occurring color & pattern variations Photos represent only a few selected samples - NO Two Slices Alike! Rubber bumpers attached to protect surfaces. Certified agate information card included