Sparkling Gemstone Bead Necklace. These sparkling, faceted natural gemstone beads are high-quality genuine precious stones. They are not lab-created or treated in any way. Available in your choice of Amazing Amethyst, Luminous Labradorite, Magical Moonstone, and Brave Tiger Eye. Gemstone beads approx. 3mm Adjustable 16" - 20" Wholesale Sterling Silver Gemstone Necklace