These 1*4*3 coasters have been printed with the photographed design I created with my 90 heart-shaped rocks from the Maine coast. The original flat-lay art was about 2 feet wide when I photographed it outdoors from a ladder. 1*4*3 is a code that represents 'I love you' as the numbers correspond to the number of letters in each word. • 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 "1-4-3" in my shop, you'll find this art also available as note cards and signed matted prints.