Most Expensive Yacht

Eclipse
Price: £1.2 billion
 This 560-foot-long yacht has two helipads, 11 guest cabins, two swimming pools, three launch boats, an aquarium, and a minisubmarine that can dive to 50 meters below the ocean surface, according to London's Daily Mail. The master bedroom and bridge have bulletproof glass, and the security system includes missile detection systems that warn of incoming rockets. The owner Roman Abramovich, a Russian billionaire who also owns Britain's Chelsea Football Club, reportedly fitted the yacht with a laser system that prevents paparazzi from taking photos. It was built by Blohm + Voss in Hamburg, Germany.

Most Expensive Speakers

Transmission Audio Ultimate System
Price: $2 million per pair
With a total of 12 units—four dipole sub-woofers, two dipole mid-woofers, four dipole medium-frequency and high-frequency ribbon panels, and two dipole high-fidelity super ribbon panels—Transmission Audio's Ultimate speaker system is a hefty piece of equipment, spanning 37 feet and weighing 5 metric tons. All units are made from aircraft aluminum and have stands in polished red or black granite. The set was introduced in late 2009, and so far two pairs have been preordered, says Bo Bengtsson, president of Transmission Audio. None has yet been delivered, as the assembly time is about six months.

Most Expensive Ring

Chopard Blue Diamond Ring
Price: $16.26 million

The centerpiece of Chopard Blue Diamond Ring is a 9-carat blue diamond (in photo) with diamond shoulders. The 18-carat white gold band is paved with diamonds. It sold overseas in 2007 to a fancy color diamond collector, reportedly for $16,260,000, but a Chopard spokesperson says the estimated value of the ring today is $18,561,310.