MATERIALS: made of excellent and durable 925 sterling silver, with multi layers white gold polish plated, it will not easily be tarnished neither made your skin turn green nor red, nickel free and hypoallergenic. Adjustable Chain Extender from 17 to 19 : sturdy 1.5mm cable chain with safety locket clasp not easy for broken, the chain length is 17/44cm plus 1.96/5cm extender which can be adjust from 17 to 19. GREAT GIFT IDEAS: Five circle rings to express 5 fabulous decades, the ring size is 1.5cm , simple and beautiful, a perfect piece of jewelry present for women, girls, best friends, sisters, wife, mother, grandmother, daughter, granddaughter. ADDITIONAL PHOTO FRAME GIFT: every item will be well packaged with an additional pocket photo frame which can be holded up with your custome photo to keep memories for the most important moment with your family. Occasions for Birthday, Mother’s Day,Valentines,Graduations,Family Celebrations,Christmas,Holiday,Thanksgiving. Money Back and Exchanged Guranteed: we offer 100% quality unsatisfied refunded and exchanged with any product issues.