|Weight||128.54 carats (25.708 g)|
|Cut||Modified antique cushion brilliant|
|Country of origin||South Africa|
|Mine of origin||Kimberley Mine|
|Cut by||George Frederick Kunz|
|Owner||Tiffany & Co.|
The Tiffany Yellow Diamond is one of the largest yellow diamonds ever discovered. Its carat weight was originally 287.42 carats (57.484 g) 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 (25.108 g) with 82facets—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 gem has been displayed across the United States. Its permanent home is at the Tiffany & Co. flagship store in Midtown Manhattan, New York City.
Discovered in South Africa in 1877, the stone was purchased by New York jeweler Charles Tiffany. His gemologist, George Frederick Kunz, studied the gem for a year before beginning to cut it; reducing it from 287 carats (57.5g) to its current size. The cutting was carried out in Paris. It was later mounted by Jean Schlumberger.
In 1879, the Tiffany branch in Paris obtained the Tiffany Diamond, which weighed 287.42 carats in the rough. It was the largest yellow diamond found up to that time. The task of supervising the cutting of this stone was the responsibility of one George Frederick Kunz (1856–1932), a twenty-three-year-old gemologist who had just joined the firm. Kunz modified the accepted square antique brilliant cut, bringing the total facets to ninety. The result is a cut that returns a great deal of light to the eye. Large diamonds of comparable brilliance were not fashioned until well into the 20th century. : 3–4 In 1893 it was part of Tiffany's exhibit at the Chicago World's Fair.
The gem was on loan from Tiffany & Co. to the Smithsonian National Museum of Natural History in Washington, D.C., from April 18, 2007, until September 23, 2007. At the time, Jeffrey E. Post, the museum's gem curator, said that this was the largest diamond on display in the U.S. The famous Hope Diamond is only 45.5 carats, which is about one-third the mass of the Tiffany Yellow Diamond.
The diamond is known to have been worn by only four women during its lifetime. It was worn by Mrs. E. Sheldon Whitehouse at the 1957 Tiffany Ball held in Newport, Rhode Island, mounted for the occasion in a necklace of white diamonds.It was subsequently worn by Audrey Hepburn in 1961 publicity photographs for Breakfast at Tiffany's . In 2019, Lady Gaga wore the diamond at the 91st Academy Awards. Beyoncé wore the necklace in a collaboration campaign with Tiffany in 2021, becoming the first black woman to wear the yellow diamond.
In addition, Gal Gadot wore a replica of the diamond made by Tiffany & Co. in the 2022 film Death on the Nile , where the theft of the diamond is a part of the mystery.
Emerald is a gemstone and a variety of the mineral beryl (Be3Al2(SiO3)6) colored green by trace amounts of chromium or sometimes vanadium. Beryl has a hardness of 7.5–8 on the Mohs scale. Most emeralds are highly included, so their toughness (resistance to breakage) is classified as generally poor. Emerald is a cyclosilicate.
A gemstone is a piece of mineral crystal which, in cut and polished form, is used to make jewelry or other adornments. However, certain rocks and occasionally organic materials that are not minerals are also used for jewelry and are therefore often considered to be gemstones as well. Most gemstones are hard, but some soft minerals are used in jewelry because of their luster or other physical properties that have aesthetic value. Rarity and notoriety are other characteristics that lend value to gemstones.
The Hope Diamond is a 45.52-carat (9.104 g) diamond originally extracted in the 17th century from the Kollur Mine in Guntur, India. It is blue in color due to trace amounts of boron. Its exceptional size has revealed new information about the formation of diamonds.
Diamond cutting is the practice of shaping a diamond from a rough stone into a faceted gem. Cutting diamonds requires specialized knowledge, tools, equipment, and techniques because of its extreme difficulty.
The Cullinan Diamond is the largest gem-quality rough diamond ever found, weighing 3,106.75 carats (621.35 g), discovered at the Premier No.2 mine in Cullinan, South Africa, on 26 January 1905. It was named after Thomas Cullinan, the owner of the mine. In April 1905, it was put on sale in London, but despite considerable interest, it was still unsold after two years. In 1907, the Transvaal Colony government bought the Cullinan and Prime Minister Louis Botha presented it to Edward VII, King of the United Kingdom, who had it cut by Joseph Asscher & Co. in Amsterdam.
Tiffany & Co. is an American luxury jewelry and specialty retailer, headquartered in Fifth Avenue, New York City. It sells jewelry, sterling silver, porcelain, crystal, stationery, fragrances, water bottles, watches, personal accessories, and leather goods. Tiffany is known for its luxury goods, particularly its diamond and sterling silver jewelry. These goods are sold at Tiffany stores, online, and corporate merchandising.
A diamond cut is a style or design guide used when shaping a diamond for polishing such as the brilliant cut. Cut does not refer to shape, but the symmetry, proportioning and polish of a diamond. The cut of a diamond greatly affects a diamond's brilliance; this means if it is cut poorly, it will be less luminous.
A diamond simulant, diamond imitation or imitation diamond is an object or material with gemological characteristics similar to those of a diamond. Simulants are distinct from synthetic diamonds, which are actual diamonds exhibiting the same material properties as natural diamonds. Enhanced diamonds are also excluded from this definition. A diamond simulant may be artificial, natural, or in some cases a combination thereof. While their material properties depart markedly from those of diamond, simulants have certain desired characteristics—such as dispersion and hardness—which lend themselves to imitation. Trained gemologists with appropriate equipment are able to distinguish natural and synthetic diamonds from all diamond simulants, primarily by visual inspection.
The Logan Sapphire is a 422.98-carat (84.596 g) sapphire from Sri Lanka. One of the largest blue faceted sapphires in the world, it was owned by Sir Victor Sassoon and then purchased by M. Robert Guggenheim as a gift for his wife, Rebecca Pollard Guggenheim, who gifted the sapphire to the Smithsonian Institution in 1960. The sapphire's name is derived from Rebecca's new surname after she later married John A. Logan. It has been on display in the National Gem Collection of the National Museum of Natural History in Washington, D.C., since 1971. It is a mixed cushion-cut sapphire, approximately the size of a large chicken egg, and set in a silver and gold brooch surrounded by 20 round brilliant cut diamonds.
Harry Winston was an American jeweler. He donated the Hope Diamond to the Smithsonian Institution in 1958 after owning it for a decade. He also traded the Portuguese Diamond to the Smithsonian in 1963 in exchange for 3,800 carats of small diamonds.
Prong setting or prong mount refers to the use of metal projections or tines, called prongs, to secure a gemstone to a piece of jewelry. A prong setting is one component of what is known to jewelers as a head, a claw-shaped type of binding that is welded or soldered to a jewelry item in order to mount a gemstone to the jewelry item. A common setting for diamond engagement rings, the prong setting allows light to strike a gemstone from more angles, increasing its brilliance.
A paragon is a perfect diamond – flawless and without inclusions. In the 16th century, a mass of 12 carats (2.4 g) was sufficient to qualify for this designation, but today the threshold lies at 100 carats (20 g).
Gabriel S. "Gabi" Tolkowsky known for cutting the famous Centenary Diamond, is one of the world's most renowned diamond cutters. Known as the father of the modern round brilliant diamond cut. and the great nephew of Marcel Tolkowsky, he is the sixth generation in his family to become well known in the diamond cutting trade.
Diamond is one of the best-known and most sought-after gemstones. They have been used as decorative items since ancient times.
The monarch of the Commonwealth realms, Queen Elizabeth II, owns a historic collection of jewels – some as monarch and others as a private individual. They are separate from the Gems and Jewels and the coronation and state regalia that make up the Crown Jewels.
The Moon of Baroda is a 24.04 carats (4.808 g) cut diamond discovered in Vadodara (Baroda), India. The diamond, canary yellow in colour, is cut in a pear shape. When found, the rough diamond weighed 25.95 carats (5.190 g). The Moon of Baroda was originally owned by the Maharajas of Baroda. The royal family of Gaekwad Maharajas was in possession of the diamond for almost 500 years. The gem was later worn by singer and actress Marilyn Monroe and Empress Maria Theresa of Austria.
Martin Katz is an American jewelry designer based in Beverly Hills, California.
The Patiala Necklace was a necklace designed & made by the Cartier S.A. in 1928. It was made for Bhupinder Singh of Patiala, who was the Maharaja of the princely state of Patiala.
The Star of Burma is an 83-carat (16.6 g) cabochon-cut star ruby. In 1935, the Burmese ruby was purchased by Howard Hoeffer of jeweler Trabert & Hoeffer-Mauboussin, whereupon it was used in several Hollywood films in the 1930s, including the musical comedy Vogues of 1938. Trabert & Hoeffer-Mauboussin sold the jewel on September 14, 2004.
Larisa Popova is an Italian gemologist, appraiser and jeweler.