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The Rock (diamond)
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 2000. The diamond is described as larger than a golf ball, and it was auctioned in 2022 for 21.9 million USD. Classification The Rock is a 228.31-carat white diamond which has been graded by the Gemological Institute of America. It has G color, VS1 clarity. The color of white diamonds can range from D to Z: D-color is the highest grade for white diamonds, and it is the rarest and most expensive. The Rock is G-color, which is the fourth whitest level of white diamonds. It is the highest grade in the near-colorless color range and only professionals can see a slight tint of color in a G-colored diamond. The diamond is and it has dimensions of by . It is described as "larger than a golf ball. History The Rock was mined and polished in South Africa 2000. It is cut in a symmetrical pear-shape. The diamond was displayed in Dubai, Tai ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diamond Color
A chemically pure and structurally perfect diamond is perfectly transparent with no hue, or ''color''. However, in reality almost no gem-sized natural diamonds are absolutely perfect. The color of a diamond may be affected by chemical impurities and/or structural defects in the crystal lattice. Depending on the hue and intensity of a diamond's coloration, a diamond's color can either detract from or enhance its value. For example, most white diamonds are discounted in price when more yellow hue is detectable, while intense pink diamonds or blue diamonds (such as the Hope Diamond) can be dramatically more valuable. Of all colored diamonds, red diamonds are the rarest. The Aurora Pyramid of Hope displays a spectacular array of naturally colored diamonds, including red diamonds. History of color grading Color grading of diamonds was performed as a step of sorting rough diamonds for sale by the London Diamond Syndicate. As the diamond trade developed, early diamond grades were in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cullinan Diamond
The Cullinan Diamond is the largest gem-quality rough diamond ever found,Scarratt and Shor, p. 120. weighing (1 lb 5.92 oz), 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. Cullinan produced stones of various cuts and sizes, the largest of which is named Cullinan I or the Great Star of Africa, and at (3.74 ounces) it is the largest clear cut diamond in the world. The stone is mounted in the head of the Sovereign's Sceptre with Cross. The second-largest is Cullinan II or the Second Star of Africa, weighing , mounted in the Imperial State Crown. Both ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Diamonds
Diamond (gemstone), Diamonds become famous typically for some combination of their size, color and quality. Diamonds occur naturally in many different colors, so the largest diamond of a particular color may not be large in absolute terms, but it may still be considered very desirable. Diamonds may also have high valuations or sale prices, or go on to have a noteworthy ownership history, but this will tend to occur for diamonds that had some outstanding characteristic to begin with. As new diamonds are discovered, the uniqueness of existing ones may diminish and there is no agreed-upon measure of a large or a high-quality diamond, so a strict inclusion criteria for notable diamonds is not attainable. Diamond A diamond is a Allotropes of carbon, solid form of the element carbon with its atoms arranged in a crystal structure called diamond cubic. At Standard conditions for temperature and pressure, room temperature and pressure, another solid form of carbon known as graphite is the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tiffany Yellow Diamond
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 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 gem has been displayed across the United States. Its permanent home is at the Tiffany & Co. flagship store in Midtown Manhattan, New York City. History Discovered in South Africa in 1877, the stone was purchased by New York jew ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Enigma Diamond
The Enigma is the largest polished black diamond in the world. Containing 55 facets and weighing in at 555.55 carats (111.11 grams), the Enigma was commissioned and inspired by Ran Gorenstein (Belgium) and completed in June 2004 after several years of cutting and faceting. The repetitive use of the number five in the design of the gem is intentional deriving from the hamsa, a palm-shaped amulet popular among Muslims and Jews in the Middle East and North Africa. The Enigma is a semi-transparent carbonado with a dark brown color. These are typically referred to as black diamonds and are often reserved for industrial uses with larger specimens considered as collectors’ stones, and in fact most gem-quality stones used in contemporary jewelry design have been treated to produce the black color. A natural black diamond of this size is an extremely rare occurrence. The origin of the diamond is uncertain, but it is believed to either be the result of a meteoric impact or part of a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nassak Diamond
The Nassak Diamond (also known as the Nassac Diamond CCPA 2003: p. 118. and the Eye of the Idol) is a large, Golconda Diamond that originated as a larger 89 carat diamond in the 15th century in India. CCPA 2003: p. 121. 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, CCPA 2003: p. 117. after which it made its way into the handle of the 1st Marquess of Westminster's dress sword. The Nassak Diamond was imported into the United States in 1927, and was considered one of the first 24 great diamonds of the world by 1930. American jeweller Harry Winston acquired the Nassak Diamond in 1940 in Paris, France and recut it to its present flaw ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Golden Jubilee Diamond
The Golden Jubilee Diamond, a 545.67 carat (109.13 g) brown diamond, is the largest cut and faceted diamond in the world. It outweighs the Cullinan I by 15.37 carats (3.07 g). The Golden Jubilee Diamond was discovered in 1985 at the Premier Mine, which is also the origin of the Cullinan diamond (1905) and other notables such as the Taylor–Burton (1966) and the Centenary (1986). Cullinan I, also known as the Great Star of Africa, had held the title of the largest cut and faceted diamond since 1908. History First known as the "Unnamed Brown", the Golden Jubilee Diamond was cut from a large brown diamond of 755.5 carats (151 g), found in the prolific blue ground of the Premier Mine in South Africa in 1985. Until 1990, the diamond remained largely unknown to the outside world, requiring two years' work to bring it to its current state. A large surface and deep cracks from the interior, as well as several inclusions, meant that cutting and polishing the large diamond presente ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Golden Eye Diamond
The Golden Eye Diamond is a flawless Fancy Intense Yellow diamond, claimed by one of its past owners to be the world's largest of its cut and color. It is believed to come from the Kimberley area of South Africa. Tom Moses, a senior vice president with the Gemological Institute of America, agrees that it came from South Africa, but it has not been able to be determined the mine of origin. Ownership and history Upon the arrest of Ohio businessmen Paul Monea and Mickey Miller, its actual ownership was unclear. The Federal Bureau of Investigation seized the diamond following an undercover investigation of Monea and Miller that resulted in his conviction for money laundering and the diamond's forfeiture to the U.S. government in 2007. Amid Monea and Millers prosecution, 17 claimants came forward in the case to claim ownership, or an ownership interest, in the Golden Eye Diamond (Akron Federal Court Case No. 5:07CR0030). The Court ruled that three claimants had colorable ownership cl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cartier (jeweler)
Cartier International SNC, or simply Cartier (; ), is a French high-end luxury goods conglomerate (company), 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 (Historical Maisons) in London, New York City, New York, and Paris. Cartier is regarded as one of the most prestigious jewellery manufacturers. ''Forbes'' ranked Cartier on its Most Valuable Brands list as 59th in 2018 and 56th in 2020, with a brand value of $12.2 B and revenue of $6.2 B. Cartier has a long history of sales to royalty. King Edward VII referred to Cartier as "the jeweller of kings and the king of jewellers." For his coronation in 1902, Edward VII ordered 27 tiaras ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carat (mass)
The carat (ct) is a unit of mass equal to or 0.00643 troy oz, and is used for measuring gemstones and pearls. The current definition, sometimes known as the metric carat, was adopted in 1907 at the Fourth General Conference on Weights and Measures, and soon afterwards in many countries around the world. The carat is divisible into 100 ''points'' of 2 mg. Other subdivisions, and slightly different mass values, have been used in the past in different locations. In terms of diamonds, a paragon is a flawless stone of at least 100 carats (20 g). The ANSI X.12 EDI standard abbreviation for the carat is CD. Etymology First attested in English in the mid-15th century, the word ''carat'' comes from Italian ''carato'', which comes from Arabic '' qīrāṭ '' قيراط , in turn borrowed from Greek ''kerátion'' κεράτιον 'carob seed', a diminutive of ''keras'' 'horn'. It was a unit of weight, equal to 1/1728 (1/12) of a pound (see Mina (unit)). History Carob seeds ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geneva
Geneva ( ; french: Genève ) frp, Genèva ; german: link=no, Genf ; it, Ginevra ; rm, Genevra is the List of cities in Switzerland, second-most populous city in Switzerland (after Zürich) and the most populous city of Romandy, the French-speaking part of Switzerland. Situated in the south west of the country, where the Rhône exits Lake Geneva, it is the capital of the Canton of Geneva, Republic and Canton of Geneva. The city of Geneva () had a population 201,818 in 2019 (Jan. estimate) within its small municipal territory of , but the Canton of Geneva (the city and its closest Swiss suburbs and exurbs) had a population of 499,480 (Jan. 2019 estimate) over , and together with the suburbs and exurbs located in the canton of Vaud and in the French Departments of France, departments of Ain and Haute-Savoie the cross-border Geneva metropolitan area as officially defined by Eurostat, which extends over ,As of 2020, the Eurostat-defined Functional Urban Area of Geneva was made up of 9 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Christie's
Christie's is a British auction house founded in 1766 by James Christie (auctioneer), James Christie. Its main premises are on King Street, St James's in London, at Rockefeller Center in New York City and at Alexandra House in Hong Kong. It is owned by Groupe Artémis, the holding company of François-Henri Pinault. Sales in 2015 totalled £4.8 billion (US$7.4 billion). In 2017, the ''Salvator Mundi (Leonardo), Salvator Mundi'' was sold for $400 million at Christie's in New York, at the time List of most expensive paintings, the highest price ever paid for a single painting at an auction. History Founding The official company literature states that founder James Christie (auctioneer), James Christie (1730–1803) conducted the first sale in London, England, on 5 December 1766, and the earliest auction catalogue the company retains is from December 1766. However, other sources note that James Christie rented auction rooms from 1762, and newspaper advertisements for Christi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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