Crystal You will receive the Stone Slice - Coaster Size - YOU CHOOSE - Natural Stone Rose Quartz, Smokey Quartz, Sodalite, Coasters with Polished Edges - Choose your Qty 1, 4, 6, 8 - Home Decor (OB9) Agate slices have a Beautiful Polished edge. These are made of natural stone therefore there will be slight imperfections. STOCK PHOTO. Each Stone Slice will vary slightly in size and in characteristics. See photo of quarter and hand for approx. size. These slices are approx. .25" in thickness.