This is a "Silver-Dyed Vein Stone" from 753works, purchased at Design Festa. It's a handmade wood resin pendant. The cord is adjustable. (Shortest 50cm - Longest 73cm) The resin contains leaf veins, making it look like an item from another world. A flavor text paper is also included. It's a cherished part of my collection, but due to financial difficulties, I'm offering it to someone who will treasure it.