Your Lassaire simulated diamond is guaranteed for as long as you own it. If a stone is defective due to workmanship, it will be replaced at no charge. Your jewelry is covered by a "Limited Lifetime Warranty" against mfg defects. Normal wear and tear, negligence, or abuse is not covered. Lafonn jewelry must not be exposed to harmful chemicals, such as chlorine. Your Lafonn jewelry should be cleaned with mild detergent & water. Gently dry.