The 24 x 24 Coquina With Shells Tile is a single stamp. Coquina Stone is a sedimentary rock mainly composed of seashells or coral. Now you can have the look of Coquina Stone with the low cost and durability of concrete. These 24″ square tiles are accented with an array of chevron seashells, starfish and seahorses. What a beautiful compliment to any outside landscaping. This piece is perfect for pool areas, as it has a natural traction to prevent slippage when wet.