These coasters have been printed with the photographed design I created with my collection of naturally-formed heart-shaped rocks from the Maine coast. The original flat-lay art was about 2 1/2 feet wide when I photographed it outdoors from a ladder. • Art is printed on sandstone by CoasterStone (USA) for moisture & heat absorption • Larger than standard-sized coasters at 4-1/4 inch square and 1/3" depth with cork backing • Cork label reads: Original flat-lay photograph designed with heart rocks shaped by the surf along the coast of Maine • Packaged in cellophane sleeves with SKU sticker By searching "starfish" in my shop, you'll find this art also available as a sandstone trivet as well as note cards, magnets, candles, and signed matted prints. Thank you for visiting!