The World’s Most Expensive Sunglasses, produced for Chopard by De Rigo Vision, will be showcased in Dubai at The One and Only Royal Mirage on May 14th 2012.

The sunglasses that worth $400,000 are made of 60 grams of 24 carat gold and decorated with 51 full-cut 4 carat River diamonds.

Following the announcement that Marilyn Monroe is the icon of the upcoming 65th Cannes Film Festival, event sponsor Chopard has designed a one-off creation to be worn by one lucky celebrity — whose identity won’t be unveiled until May 16.

The late Hollywood actress famously sung about diamonds being a girl’s best friend, so for this year a necklace of heart-shaped diamonds and briolettes designed by Chopard’s co-president Caroline Scheufele will be revealed.

If you feel like your dog hasn’t been pampered enough, then I Love Dogs Diamonds has a collar for you : from the I Love Dogs La Collection de Bijoux, Amour Amour is the world’s most expensive dog collar with the price tag of $3.2 million.

The world’s biggest watch event opens to the public Thursday in Basel, Switzerland, on the back of a bumper year thanks to Asian demand for luxury timepieces.

Hublot, a subsidiary of French luxury goods group LVMH, will use the high-profile event to unveil “The $5 million” a watch comprising no less than 1,282 diamonds.

“This is the most precious watch ever created by Hublot and its long-standing partner, Atelier Bunter in Geneva,” said Hublot.

A United Kingdom-based company called Superlative Luxury has created an eco-friendly t-shirt priced at $400,000.

The t-shirt is made of 100% organic cotton and the manufacturing process uses only renewable energy, such as wind and solar, reducing the carbon footprint by 90%.

The t-shirt features a spherical pattern created from 16 one-carat diamonds; half of which are white diamonds and the other half are enhanced rare black diamonds.

Black Astrum today launch the Signature Card range of bespoke diamond encrusted business cards, targeting ultra high net worth individuals across the world.

A full set of cards can contain in excess of 30 carats. The average selling price per card is around the £1000 mark, sold in sets of 25, 50 and 100 cards.

“The Signature Card allows our members to express themselves in a truly unique way” said Sufian Khawaja, Black Astrum’s concept director.