Said to be the most expensive piece of jewelry in the world, it was sold for a staggering price of $46 million in November 2010. Famously known as “The Graff Pink”, it is classified as a type II color diamond and has a perfect rating which gives it a price of about $1.85 million per carat.

Once owned by Queen Marie of Romania this symbolic piece of brooch made out of Pecten shell was used as a crowned monogram for Princess Marie. It was crafted by C. Faberge and belongs to history of Russian Royalty.