Concrete sometimes develops tiny hairline cracks, but our fire tables are fiber reinforced, which prevents these cracks from growing or separating when they happen. They’re not a defect; they’re just part of owning a concrete fire table. We recommend inspecting your beach stones from time to time, when the fire table is cool, and discarding the stones that have cracks in them. You can contact Ethan Allen Client Services to order replacement stones, for either the beach stones found in concrete fire tables and the lava rock found in both fire tables and fire pits.