These Natural Peruvian Blue Opal Rondelle Shape Beads are a stunning addition to any jewelry collection. Measuring 3.5-3.7mm 6 inches, these beads are perfect for creating beautiful and unique pieces. The plain style and natural blue color of the opal stones add a touch of elegance to any design. Made from high-quality gemstones, these beads are sure to impress with their beautiful and natural beauty.