Thirstystone Coasters - Crab Cast Sale! from 1499 /per Qty. Add to Cart This item is currently on backorder but you can still purchase it now and we'll ship as soon as more become available. Sandstone absorbent coaster with beautiful Puzzles That Rock images. 4 pack coaster set. 4 3/8 x 4 3/8 with cork backing. SKU:627546355d7fa Tweet