I love crackle glass beads. They have inner sparkle that catches the light in such a lovely and surprising fashion. The "cracks" in the glass are created by rapidly cooling the beads while they are still hot. The beads are then reheated to smooth the exterior, and make them stronger through out. Yellow Beads About 8mm, some slight variation in size exists. Hole size about 1.5mm Approximately 50 beads per strand. Full Strand measuring just under 16 inches. A bead or two may be misshapen Measurements are made to the nearest millimeter. Thank you for shopping SmileyBoy Beads!