Skip double opal titanium navel curve images slider SKU: Double Opal Titanium Navel Curve Sign-up to see price This 14g Double Opal Titanium Navel Curve is available in two sizes and features 5mm/8mm bezel set synthetic opals. Product Details: Material: Titanium 6Al-4V-Eli ASTM F-136 Gauge: 14g (~1.6mm) Opal sizes: 5mm,8mm Threading: Internal 1.2mm 17 opal color options 13 anodized color options