This is a necklace made of stone beads. The beads registered as quartz or higher on my gem tester. They are definitely not glass. The beads are hand strung and have knots between the beads. The necklace does not have a clasp. It measures 32 inches long and the beads are 10mm. The necklace is in very good condition with no problems that I can find. Please let me know if you have any questions. Thanks for stopping by.