The famous Briolette Diamond Necklace is a stunning piece that has a flawless briolette diamond as its centrepiece. This diamond weighs more than 75.36 carats, and it also has another amazing marquise diamond of a purple-pink shade, attacked it. Apart from these, there are many other briolette diamonds of smaller sizes in this necklace, which are set on a white gold chain that weighs 18 carats, and has an adjustable length. When it was put up in auction, it was expected to bring $8.5-12.5. It sold for $11.1 million and became one of the most expensive jewelry pieces in the world.
