You are looking at a gorgeous 925 sterling silver necklace, set with an authentic US 2022 Women Quarters 99.9% Silver Proof Coin - Dr. Sally Ride. The coin is Gem BU uncirculated and mint marked "S". It's set with backside 4-prong, and you can see both sides of the coin. The pendant is made of solid 925 sterling silver, sized about 39mm(1.54") x 32mm(1.25"). It comes with a 18" solid 925 sterling silver chain, and also a gift box. I hope you end up with one of these beautiful women silver coin necklaces. This necklace will be great for gift, investment purpose or just adding to your coin/jewelry collection. Both chain and pendant are marked 925 sterling silver. Due to being deeply polished and highly reflective, the background fields of coin will look black when taking photos. Thanks!