Sparkling Gemstone Necklace. These sparkling, faceted gem beads are high-quality genuine precious stones. They are not lab-created or treated in any way. Available in your choice of natural Blue Sapphire, Red Ruby, or Green Emerald. Adjustable 16" - 20" For more gemstone choices, search 'Sparkling Necklace'. Wholesale Sterling Silver Gemstone Necklace