Most Expensive Jewelry. New York (CNN Business) Tiffany & Co. just unveiled its newest most-expensive bling ever. "The World's Fair Necklace," unveiled in. Experts think its unusual blue coloring comes from impurities caused by trace amounts of boron atoms.
This is mainly an ideal list for those who like to make a grand appearance.
The Pink Star Diamond currently holds the record for the most expensive ring ever sold at auction — making it one of the world's most expensive jewelry pieces.
The central stone of the Queen Mother's crown, the Koh-I-Noor diamond is viewed by millions of visitors to the Tower of London each year. It is widely used in several electronics devices and equipment. The Oldest and one of the most respected jewellery companies, Garrard, has made one of the most expensive jewellery pieces in the world: the Heart of the Kingdom.