Roberto Coin, a gold and diamond bangle, the curving hinged bangle engraved with a woodgrain design,

Roberto Coin, a gold and diamond bangle, the curving hinged bangle engraved with a woodgrain design, set with a brilliant-cut diamond, the interior with star-shaped apertures, and accented by a circular-cut synthetic ruby, in 18ct white gold, inner circumference 16.6cm, British hallmark, sponsor's mark RC for Roberto Coin, gross weight 21 grams