Zoom icon Click to expand Tap to zoom Chevron down icon Chevron down icon 1.00 mm Thick Flat Round Sapphire Crystal (28.6 mm to 31.5 mm) by PERRIN Sale $15.75 | / SKU CR-SPF10-4-28-6 28.6 mm - $15.75 28.7 mm - $15.75 28.8 mm - $15.75 28.9 mm - $15.75 29.0 mm - $15.75 29.1 mm - $15.75 29.2 mm - $15.75 29.3 mm - $15.75 29.4 mm - $15.75 29.5 mm - $15.75 29.6 mm - $15.75 29.7 mm - $15.75 29.8 mm - $15.75 29.9 mm - $15.75 30.0 mm - $15.75 30.1 mm - $15.75 30.2 mm - $15.75 30.3 mm - $15.75 30.4 mm - $15.75 30.5 mm - $15.75 30.6 mm - $15.75 30.7 mm - $15.75 30.8 mm - $15.75 30.9 mm - $15.75 31.0 mm - $15.75 31.1 mm - $15.75 31.2 mm - $15.75 31.3 mm - $15.75 31.4 mm - $15.75 31.5 mm - $15.75 28.6 mm 28.7 mm 28.8 mm 28.9 mm 29.0 mm 29.1 mm 29.2 mm 29.3 mm 29.4 mm 29.5 mm 29.6 mm 29.7 mm 29.8 mm 29.9 mm 30.0 mm 30.1 mm 30.2 mm 30.3 mm 30.4 mm 30.5 mm 30.6 mm 30.7 mm 30.8 mm 30.9 mm 31.0 mm 31.1 mm 31.2 mm 31.3 mm 31.4 mm 31.5 mm Diameter (mm) Chevron down icon 1 2 3 4 5 6 7 8 9 10+ Quantity Chevron down icon Quantity Add to cart Spinner icon Notify me when back in stock Email address Email me when available This crystals are a scratch resistant crystals for high-end watches. This crystals have a polished top edge.