The 33 year-old Amosu, whose company Amosu Luxury designs customized gem-studded apparel, electronics and accessories for upscale clientele, revealed the Amosu Black Diamond Blackberry last week .
In the battle between the former world number ones, Williams needed barely an hour to beat her Belgian opponent and remains on course to win the gem-encrusted racket on offer for winning the event three times in a five-year span.