The Tiffany Yellow Diamond is one of the largest yellow diamonds ever discovered. Its carat weight was originally 287.42 carats in the rough when discovered in 1878 in the Kimberley mine in South Africa. It was cut into a cushion shape of 128.54 carats with 82 facets—24 more than a traditional round brilliant—to maximize its brilliance. The facet pattern features eight needle-like facets pointing outward from the culet (bottom) facet. Jewelry and diamond historian Herbert Tillander refers to this as a "stellar brilliant cut", and lists the gem in his book, Diamond Cuts in Historic Jewelry – 1381 to 1910 (1995), among other such diamonds: the Cullinan Diamond, the Koh-i-Noor, the Polar Star, the Wittelsbach, and others.

The Tiffany & Co. flagship store is a ten-story retail building in Midtown Manhattan, New York City, within the luxury shopping district on Fifth Avenue between 49th and 60th Streets. The building, at 727 Fifth Avenue, has served as Tiffany & Co.'s sixth flagship store since its completion in 1940. It was designed by New York City architects Cross & Cross in a "conservative modern" style.