Gift Set of Four Genuine Brazilian (4"- 5") Agate Coasters. Includes Protective rubber bumpers. - BLUE Premium quality, polished one-of-a-kind natural Brazilian Agate Coasters Each set is unique due to naturally occurring color & pattern variations Ideal Size for Mugs, Wine Bottle & Glasses, and/or Whiskey Glasses Four Protective Rubber Bumpers Attached to Protect Surfaces Make the Perfect Housewarming or Wedding Gift