Crystal Pendant Metal Hook Bookmark With Glass Bead Chain, Bronze Hook Bookmark, Jade, Opal, Rose Quartz, Black. Hook bookmark with a Crystal pendant adds beauty and style to your books. The chain has glass beads to enhance the mystical bookmark! Choose between black, opal, rose quartz, or jade crystal to complete your pendant hook bookmark. This bookmark is 3.4" tall and has a small hook to loop over the book spine so that the chain and charm/crystal dangle outside! This is a perfect fit for any standard and small size hardback and paperback book. This unique style of bookmark is also fun to fidget with while reading. The different textures of the chain, crystal, and shepherd's hook are enjoyable for tactile sensory.