A real rock cut into a bead and mounted with a heart shaped clasp and silver leaf bead caps. This stitch marker has a large clasp so it’s much easier to open and close if you struggle with those fiddly little clasps!
It also doubles beautifully as a shawl pin with its striking white stone bead and large locking clasp.
I recommend this progress keeper to be used on heavy weight yarn projects! It's not light, but it is gorgeous! 
I love wearing mine as a show piece on a finished shawl though!