The Cullinan Diamond is the largest gem-quality rough diamond ever found, weighing 3,106 carats (621.20 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, the British king who reigned over the territory, and it was cut by Joseph Asscher & Co. in Amsterdam.
Boucheron is a French luxury jewelry and watch house located in Paris, 26 Place Vendôme, owned by Kering.
The Gemological Institute of America (GIA) is a nonprofit institute based in Carlsbad, California. It is dedicated to research and education in the field of gemology and the jewelry arts. Founded in 1931, GIA's mission is to protect buyers and sellers of gemstones by setting and maintaining the standards used to evaluate gemstone quality. The institute does so through research, gem identification and diamond grading services and a variety of educational programs. Through its library and subject experts, GIA acts as a resource of gem and jewelry information for the trade, the public and media outlets.
Cartier International SNC, or simply Cartier, is a French luxury-goods conglomerate that designs, manufactures, distributes, and sells jewellery, leather goods, and watches. Founded by Louis-François Cartier (1819–1904) in Paris in 1847, the company remained under family control until 1964. The company is headquartered in Paris and is a wholly owned subsidiary of the Swiss Richemont Group. Cartier operates more than 200 stores in 125 countries, with three Temples in Paris, London, and New York City.
The Jubilee Diamond, originally known as the Reitz Diamond is a colourless, cushion-shaped diamond weighing 245.35 carats, making it the sixth largest diamond in the world. It was originally named after Francis William Reitz, the then president of the Orange Free State where the stone was discovered, before being renamed to honour the 60th anniversary of the coronation of Queen Victoria in 1897.
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.
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.
Diamond is one of the best-known and most sought-after gemstones. They have been used as decorative items since ancient times.
Fred Joaillier, more commonly known as Fred, is a French jewellery and watch brand founded in 1936 by Fred Samuel in Paris and operated by the company "Fred Paris".
Queen Elizabeth II owned a historic collection of jewels – some as monarch and others as a private individual. They are separate from the gems and jewels of the Royal Collection, and from the coronation and state regalia that make up the Crown Jewels.
The Nassak Diamond is a large, 43.38 carats (8.676 g) Golconda Diamond that originated as a larger 89 carat diamond in the 15th century in India. Found in Golconda mines of Kollur and originally cut in India, the diamond was the adornment in the Trimbakeshwar Shiva Temple, near Nashik, in the state of Maharashtra, India from at least 1500 to 1817. The British East India Company captured the diamond through the Third Anglo-Maratha War and sold it to British jewellers Rundell and Bridge in 1818. Rundell and Bridge recut the diamond in 1818, after which it made its way into the handle of the 1st Marquess of Westminster's dress sword.
Graff is a British multinational jeweller based in London. It was founded by British jeweller Laurence Graff in 1960. A vertically integrated company, Graff operations comprise the design, manufacture and retail distribution of jewellery and watches.
The Empress Eugénie Diamond is an oval-shaped brilliant diamond, perfectly cut, and weighing 51 carats. It is named for the French empress Eugénie de Montijo, who owned it in the late 19th century. It is currently in the hands of a private collector.
The Winston Blue is the name given to what was the largest flawless vivid blue diamond bought by Harry Winston, Inc. on May 15, 2014, from an anonymous person for $23.8 million at Christie's Geneva Magnificent Jewels sale. The approximately $1.8003 million per carat price paid for the 13.22-carat diamond is a world record for a blue diamond. Harry Winston, Inc. had also bought a 101.73-carat colorless diamond named Winston Legacy at Christie's Geneva jewelry auction in 2013. The American luxury jeweler had then paid $26.7 million for the colorless diamond, which is a world record for the highest price paid per carat for a colorless diamond.
Fred Mouawad is a Lebanese businessman from Zgharta, Lebanon and based in Bangkok, Thailand. He has founded and is the CEO of seven companies. In 2013, Wealth-X named Mouawad the eighth richest diamond owner in the world, with a net worth of $1.1 billion.
Tabbah is a bespoke jewelry company that was founded in 1862 and now is a family business owned and run by Nabil and Nagib Tabbah.
The "Star of the East" is a 94.78-carat, pear-shaped, D-color stone of VS2 clarity grade. Its exact origin is unknown, but it likely originated from India. The Star of the East Diamond was part of the collection of jewels belonging to the Ottoman Sultan, Abdulhamid II, who ruled between 1876 and 1909. The Star of the East was stolen from Ottoman Sultan Abdulhamid II. The exact circumstances under which the diamond came into the possession of the Sultan are not known. Even the origin of the name and at what point in its history it was christened, remains a mystery. The diamond was part of the collection of the jewellery-loving Sultan of the Ottoman Empire, Abdulhamid II. It was later acquired by Pierre Cartier, who sold it to Evalyn Walsh McLean. After McLean's death, Harry Winston purchased the diamond together with McLean's entire collection. The diamond's current whereabouts are unknown.
Henry Ho is a jeweler in Thailand and President of the Bangkok Diamond & Precious Stones Exchange.
The Rock is the world's largest white diamond ever auctioned. It is a nearly colorless 228.31 carat pear-shaped diamond mined in South Africa c. 2000. The diamond is described as larger than a golf ball, and it was auctioned in 2022 for 21.9 million USD.
David Mouawad
Fayez Mouawad
Robert Mouawad
Alain, Fred & Pascal Mouawad
