30” Rope Necklace 1/16” Thick Silver NWOT

30” Rope Necklace 1/16” Thick Silver NWOT This necklace is new without tags; it has been sitting in it's original bag since purchase...it didn't come with a tag. Metal unknown! It looks like silver and it is light weight like silver, but it isn't labeled with 925; I found the specs online and it claims to be brass plated with 925 sterling silver.