Rock Paradise 6 (SIX) Agate Coaster - Purple Colored Agate Coasters COA (AM10B1) 6 (SIX) Agate Coaster - Purple Colored Agate Coasters Rock Paradise COA (CSTR-02) STOCK PHOTO. Each coaster will vary slightly in size and characteristics. Measures approx. 3" x 5.5" This listing is for 6 (SIX) purple colored agate slice coaster (CSTR-02) This agate is from Brazil, and each agate that we sell is hand cut and polished. Each stone is hand selected for its natural beauty Wonderful piece to display any where in your home or office. Makes a lovely gift! Rock Paradise Exclusive