Rarest Necklaces
In the world of rare necklaces, a couple million dollars doesn't get you much. Even ten million dollars is cheap for these babies. The most expensive necklace may likely be one built around the Blue Empress, a rare natural blue diamond. The pear-shaped diamond weighs about 14 carats. It is set in 18k white gold and surrounded with white diamonds. It's estimated to be worth $16 million.
