Rockpick Legend Co. sells all manner of paraphernalia relating to rock collecting, polishing, crafting, and care. They have a nice online catalog of literature, tips and tricks. At their physical retail location, they maintain a free museum display with over 200 mineral and fossil specimens.
Store hours are Monday through Friday 9:30 am to 6:00 pm and Saturday 9:30 am to 3:00 pm.