This set (4 coasters) of purple agate slice coasters have silver or gold edges for a finished look. Each agate coaster is unique with dark purple on the outside and a swirl of light purple and white crystals in the center. These stone coasters are fairly large, measuring from 3 1/2"-4 1/2" inches. They come with optional clear bumpers to protect the agate slice as well as your table. This agate coaster set makes a nice housewarming or hostess gift--or use them during a dinner party for gorgeous table decor.