ROBERTO COIN 18K White Gold Diamond Wide Convex Ring A ring like this is made for the jewelry lover who prefers presence over excess. This Roberto Coin creation in 18K white gold is defined by its bold 18mm width and convex contour. The satin-finish surface is punctuated by fine linear cuts, each centered with a round diamond. The wide band curves elegantly around the finger, showcasing the designer’s mastery of proportion and detail. The signature hidden ruby rests discreetly inside the band. Offered in estate condition, this Roberto Coin 18K White Gold Diamond Wide Convex Ring comes with a gift box. METAL & STONES Metal 18K White Gold Stones Diamond Stamp 750 DIMENSIONS Weight 15.6 grams Band Thickness 18 Ring Size 7.0 Ring Top Height 3