40th Birthday Sterling Silver Four Interlocking Rings NecklaceA stunning necklace to treasure for a special 40th birthday, this interlocking four ring necklace features four rings for four decades. Each of the four interlocking sterling silver rings has a uniform hammered finish. The rings measure approximately 15mm each. As well as a range of chain lengths, two chain styles are also available; either a light weight sterling silver diamond cut curb chain or a delicate sterling silver trace chain, as shown in the