Heavy Duty LARGE PURPLE AGATE COASTER -#5 Size - 5x4.5x.25" - Purple Color - Polished Both Sides - Agate Slice Geode Coaster Agate Slice Agate Slab from Brazil Lot3 by GeoSpecimens Large Purple Agate Coaster Free Replacement Guarantee! (See Description) Makes a Great Display Piece Polished Both Sides Heavy Duty Brazillian Agate