The 16 gauge captive bead ring is made from high polish grade 23 titanium (Ti 6Al-4V ELI ASTM F136). These cannot be returned or exchanged if you select a custom anodized color. Only the high polish (plain silver) is eligible for our return policy. The disc-shaped bezel-set gemstone bead has a 4mm diameter. Choose your size, titanium color and gemstone below.