partnered with American singer Beyoncé and rapper Jay-Z to promote the company's "About Love" campaign. Beyoncé became the fourth woman, and first Black woman, to wear the Tiffany Yellow Diamond. The campaign incorporated Tiffany's recently acquired robin egg blue painting, Equals Pi (1982), by American artist Jean-Michel Basquiat. In 2022, Tiffany partnered with Curtis Kulig while retaining his original "Love Me" concept, Kulig also created other love-themed messages such as: "Dare Me," "Know Me," and "Kiss Me" to be displayed alongside the Tiffany HardWear, Tiffany Knot and Tiffany T collections. Products Diamonds Tiffany is known for its luxury goods, particularly its diamond and sterling silver jewelry. George Frederick Kunz (1856–1932), a Tiffany's gemologist, became instrumental in the international adoption of the metric carat as a weight standard for gems. The Tiffany Yellow Diamond () is usually on display in the New York City flagship store. In 1886, founder Charles Tiffany conceived of the Tiffany Setting ring design, in which six prongs hold the diamond off of the band, in order to better accentuate the diamond. Like other similar diamond retailers, Tiffany's enacts a strict policy against the repurchasing of diamonds sold from its stores. In 1978, a woman in New York City was denied after she attempted to sell back a diamond ring she had bought from Tiffany two years earlier for $100,000. Writing for The Atlantic publication in 1982, Edward Jay Epstein explained the rationale for such a policy: In 2019, Tiffany CEO Alessandro Bogliolo announced that in 2020 the company would become transparent regarding the country or region of origin of the company's newly sourced and individually registered diamonds. Colored gemstones Tiffany offers jewelry incorporating a wide variety of colored gemstones, including gems it played a role in popularizing, such as tsavorite, kunzite, and morganite. In February 2015 a turquoise and aquamarine bib designed by Francesca Amfitheatrof, Tiffany's design director, and worn by Cate Blanchett at the 2015 Academy Awards, contrasted favorably with the white–diamond encrusted jewelry worn by other stars. Fragrances In the late 1980s, Tiffany & Co. ventured into the fragrance business. "Tiffany" for women was launched in 1987, a floral perfume for women by perfumer François Demachy. At $220 per ounce, "Tiffany" was successfully marketed by major department stores across the United States. Two years later, "Tiffany for Men" was launched in 1989 and developed by perfumer Jacques Polge. The bottles for both the men's