Material: Gemstoneit's like Lapis Lazuli Stone Beads.Strand Length:15''beads size:10309550-4mm,about 95pcs10309551-6mm,about 63pcs10309552-8mm,about 48pcs10309553-10mm,about 37pcs10309554-12mm,about 32pcsPlease allow 1- 3mm error due to manual measurement and make sure you do not mind before...