Skip opal tear drop captive bead images slider SKU: Opal Tear Drop Captive Bead Sign-up to see price The Opal Tear Drop Captive Bead is available in 4mm, 3mm, and 2mm sizes. Product Details: Material: Synthetic Opal; Titanium 6Al-4V-Eli ASTM F-136 Opal Sizes: 4mm, 3mm, 2mm Dimensions: 10mm x 5mm (L x W) Compatible with 18g to 8g captive rings 13 anodized color options