Czech Fire Polish Glass Beads 6mm Round Peridot Opal (25) Czech Fire Polish Beads In Color "Peridot Opal" # In Czech Fire Polished beads, the shape called "Round" is actually more of an oval. # Measurements: 6MM long, 5.5MM wide. # Quantity: 25 beads, which is approximately 6 inches of beads when strung.