Skip opal galaxy cluster titanium top - threaded images slider SKU: Opal Galaxy Cluster Titanium Top - Threaded Sign-up to see price The Opal Galaxy Cluster Top features a seven bezel-set opal cluster - a 4mm opal at the center with a 3mm and two 2mm opals on each side. Product Details: Material: Titanium 6Al-4V-Eli ASTM F-136 Gauge: 18g-16g or 14g- 12g Opal Sizes: 4mm, 2 x 3mm, 4 x 2mm Threading: Internal 1.2mm Dimensions: 10mm x 6mm (L x W) Available Colors: Dark Lapis, White Opal 13 Anodized color options