18K Vermeil; recycled sterling silver with 18K-gold plate 15" chain with 2" extender Spring ring clasp 3/4" height; 3/4" width Also available in recycled sterling silver, #KE-7465S Item #KE-7465G Helpful info: Keep jewelry away from water and chemicals. Remove during physical activities. Store separately in a soft pouch. NECKLACE MEASUREMENT GUIDE