Material: Solid 18K Gold Main Stone Weight: 4.06 Carats Total Weight: Approx. 32 Grams Certification: Includes official NGTC (National Gemstone Testing Center) Finished Product Certificate After-Sales Service Details Lifetime Complimentary Maintenance Includes unlimited professional jewelry cleaning. Lifetime Complimentary Polishing For minor surface scratches on the metal. Lifetime Warranty – Reshaping for Deformation Covers reshaping if the item is deformed by external force. If repairable: Reshaping service is provided free of charge. If irreparable: Remaking service is available at 60% of the current tag price (the original deformed item will be recycled). Lifetime Warranty – Ring Resizing Includes one free ring resizing service. Adjustment range is limited to ±2 ring sizes from the original. Lifetime Warranty – Side Stone Replacement Covers replacement if a side stone falls off. If damaged stone ≤ 0.02ct: Replacement is free of charge. If damaged stone > 0.02ct: Replacement diamond will be charged at the prevailing market price.