A Paris jeweller is selling a 40,000 euro (USD 59,154) 18-carat diamond ring mounted in a sex toy that it claims is the world's most expensive erotic novelty.

A picture taken on Monday in Paris shows a woman showing a 18-carat diamond ring mounted in a sex toy, sold by a Paris jeweller for 40,000-euros (USD 59,154)

"This sex toy was designed for rich people who want to declare their love in a special way," said Jean-Francois Tokars, a manager at Maison Victor on Paris' posh place Vendome.

The luxury sex toy is a white gold dildo that comes in various sizes and comes apart to release the ring studded with 117 diamonds.