Forget the boardroom. Power dressing has become an evening affair, thanks to strong accessories with a surplus of sass. Not to mention flash, as in De Beers’s diamond-encrusted chunk of a cocktail ring, and René Boivin’s weighty mirrored bracelets, which co-opt bold, disco-ball glitz sans the retro schmaltz. Things are sharp and sleek with considerably less sparkle at Devi Kroell, where a dainty clutch packs a pint-size punch, toughened up with black wood and silver studs. And anyone in the mood to make a dynamic statement should step into Pierre Hardy’s black leather sandal. Perched atop a sculptural, stakelike heel, it’s nothing if not assertive.