Sky Blue saphhire ball made from synthetic corundum produced using the Flame Fusion Process and precision ground to 3.175mm in diameter.
 
     Dimension: ϕ 1/8" (3.175mm) +/- 2.54 μm
     Sphericity: < 0.0006 mm (0.6 μm)
     Roughness: Ra < 0.05 μm
     Grade G25
 
*Non-uniform colour includes pale blue, clear and grey sections. Each ball is individual and appearence will differ slightly from images because they're unique.