Tiffany Diamond

The Tiffany Diamond is a 128.54 carat cushion-shaped yellow diamond, one of the largest yellow diamonds ever discovered. The 287.42 carat rough stone was unearthed in the Kimberley diamond mines of South Africa in 1877 and purchased the following year for $18,000 on behalf of New York jeweler Charles Lewis Tiffany. The cutting was supervised by George Frederick Kunz, the firm's gemologist. The diamond remains on view at the Tiffany & Co. flagship store on Fifth Avenue in New York, and the company has never sold it.

The stone has been reset only a handful of times. In 1957 it was placed in a necklace for the Tiffany Ball in Newport, Rhode Island, where Mary Whitehouse became the first woman to wear it. In 1961 it was set in Jean Schlumberger's Ribbon Rosette necklace and worn by Audrey Hepburn in publicity photographs for Breakfast at Tiffany's. In 1995 it appeared in Schlumberger's Bird on a Rock brooch for his retrospective in Paris, and in 2012 it was mounted in a diamond necklace for the company's 175th anniversary.

In recent years the diamond has returned to the spotlight on two performers. Lady Gaga wore it at the 2019 Academy Awards, and Beyonce wore it in a 2021 Tiffany advertising campaign.