A showpiece for him, this richly hued ring is a perfect match for his casual-to-business personality. A singularly striking 10.0 x 6.0mm barrel-shaped black onyx rests at the centre of this style, flanked by sparkling diamonds and grooved detailing in ideal symmetry. Radiant with diamond accents and a bright polished shine, this 10K gold style is a great go-to look he's sure to appreciate.