Lucia Moure / Wendy Brandes

Scandalous! What's the street price on this ring made of the white stuff — you know, porcelain? "Nuit blanche" ring by Geneva- based Colombian artist Lucia Moure. Below, some of her wood and silver "potion" rings with removable stoppers:

Bonus link: if poison's your potion, New York's Wendy Brandes has lots of pretty poison rings; this piece with green tourmaline is US$5,850.

Even more jewellery:

• Evelien Sipkes (Netherlands Antilles) - natural porcelain


• Mary Frisbee Johnson (Iowa) - medals & lenses


• Agnieszka Knap (Sweden) - organic enamel


• Andrew Geoghegan (UK) - diamond jewellery


• Teresa Smith-Mulkey (Arkansas) - silver & beads