This set (4 coasters) of natural agate slice coasters have gold or silver edges for a finished look. Each enchanting natural agate coaster is unique with natural tan on the outside and lighter white swirls of tan and white crystals in the middle. 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.