Set of 4 handmade resin coasters with organic shapes and different sizes mimicking real geodes. Variations in color and intrinsic details can be expected ensuring that every coaster is truly one of a kind. Unlike real geodes, these handmade coasters are super resistant and will not break. They are perfect for entertaining and can safely hold both hot and cold beverages. Hand wash. Coasters sizes range from 3.5 X 4 to 5 inches in diameter.