6 of the Royal Family's Priciest Pieces of Jewelry

The massive brooch is made from two of the diamonds cut from the Cullinan Diamond, the largest gem-quality diamond ever found. The Cullinan III & IV brooch consists of the third- and fourth-largest diamonds cut from it: a 94.4-carat clear pear-shaped stone, and a 63.6-carat cushion-shaped stone. Although the exact value of the brooch is unknown, the original Cullinan diamond was valued at over $2 billion.