Stephen Webster, the jewelry designer with a star-studded clientele and a rock 'n' roll attitude has a collection of exceptional pieces. They include a "shark's jaws" ring, pictured here, its gold "teeth" whitened with pavé diamonds and clenching a smoky quartz stone. (courtesy Stephen Webster)

Poison Ivy Cluster Ring by Stephen Webster in red gold with smokey quartz and white diamonds. (courtesy Stephen Webster)

"Jennifer Lopez has got one like that - have you seen her wearing it?" asked Stephen Webster, the jewelry designer with a star-studded clientele and a rock 'n' roll attitude. His exceptional pieces included J-Lo's curry-colored Tiger's eye ring and a "shark's jaws" ring, its gold "teeth" whitened with pavé diamonds and clenching a smoky quartz stone. Suzy Menkès www.iht.com