Green Opal Natural Gemstone Smooth Freeform Nuggets Tumble Shape Handmade Beads Size 10-14mm Peruvian Opal Beads for Jewelry Making Crafts Gemstone : Green Opal Beads Shape: Smooth Nuggets Freeform Beads Size : approx 10-14mm Strands Length: 16 inch long All beads size and strands size are approximate. Please accept this and all other policies before purchasing. Please read and accept our return policy before purchasing. Sizes for all items is an approximation.