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Sewelô
The Sewelô diamond is the fourth-largest rough diamond ever found. The diamond was recovered in April 2019 by the Lucara Diamond Corp in its Karowe diamond mine in Botswana. The diamond is 1,758 carats and weighs 352 grams or 12.39 oz. At the time it was found, ''Sewelô'' was the largest diamond in Botswana's history, surpassing the 1,111 carats (222 g, 7.83 oz.) Lesedi La Rona extracted at the same mine on 16 November 2015. The Lesedi La Rona was the fourth-largest diamond ever found, and the third-largest of gem quality. The gem was named through a competition held by Lucara. Out of 22,000 submissions the name ''Sewelô'' was chosen, which translates 'rare find' in Setswana. In January 2020 it was announced that Louis Vuitton had purchased the diamond for an undisclosed sum. Louis Vuitton will work with HB Antwerp to polish the diamond and cut it into smaller stones. The stone is covered with a thin layer of opaque black carbon and its surface is pitted. It is the siz ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
HB Antwerp
HB Antwerp is a diamond cutting and technology company based in Antwerp, Belgium. It was founded in 2020 by Shai de Toledo, Rafael Papismedov, Oded Mansori and Boaz Lev. History HB Antwerp purchases rough diamonds from the Karowe mine in Botswana through a deal with Canadian mining company Lucara Diamond Corporation and works in partnership with the Botswana government. In 2020, HB Antwerp partnered with Lucara and Louis Vuitton to work on several large stones, including the " Sewelo" diamond, the "Sethunya", a 549-carat diamond, and a 1,175-carat rough diamond, all discovered in the Karowe mine in Botswana. In August 2020, they entered an agreement to purchase all of Lucara’s large stones (10.8 carats and up) and, in 2022, they signed a ten-year contract. The contract was terminated in October 2023. In February 2024 a new 10-year diamond sales agreement was signed with Lucara. In 2022, the company partnered with Microsoft to verify and track mined gems; all data about thei ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Karowe Diamond Mine
Karowe diamond mine is a mine located in Botswana. It is an open-pit mine. In 2021, Lucara Diamond secured $220 million to take the mine underground. History The Karowe Mine (''"Karowe"'' is a local Sesarwa term for "a precious stone"), situated in northern Botswana was discovered in 1970 by De Beers, which also found the Orapa, the country's first diamond mine, plus three others in the mid-1970s. De Beers discovered the kimberlite A/K6, but their early evaluation showed low economic importance, the mine having only a 3.4-hectare surface area. The ownership was transferred three times. In 2009, De Beers sold their 70% shareholding in the mine to Canadian company Lucara Diamond for . Later, Lucara acquired full ownership of the mine. The mine was commissioned in 2012. In June, the first sale of rough diamonds from the mine was held. Generally, its first years of production went better. The company uses modern equipment, giving them the ability to recover large diamonds that the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Louis Vuitton
Louis Vuitton Malletier SAS, commonly known as Louis Vuitton (, ), is a French Luxury goods, luxury fashion house and company founded in 1854 by Louis Vuitton (designer), Louis Vuitton. The label's LV monogram appears on most of its products, ranging from luxury bags and leather goods to ready-to-wear, shoes, perfumes, watches, jewellery, accessories, sunglasses and books. Louis Vuitton is one of the world's leading international fashion houses. It sells its products through standalone boutiques, lease departments in high-end department stores, and through the e-commerce section of its website. Louis Vuitton merged with Moët Hennessy in 1987 to create LVMH, of which it is a subsidiary. For six consecutive years (2006–2012), Louis Vuitton was named the world's most valuable luxury brand. Its 2012 valuation was US$25.9 billion. In 2013, the valuation of the brand was US$28.4 billion with revenue of US$9.4 billion. The company operates in 50 countries with more than 460 stores ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Largest Rough Diamonds
This is a partial list of the largest non-synthetic diamonds with a rough stone (uncut) weight of over 200 carats (40 grams). The list is not intended to be complete—e.g., the Cullinan (formerly Premier) mine alone has produced 135 diamonds larger than 200 carats since mining commenced. De Beers generally does not publish information relating to large diamond discoveries. See also *List of diamonds *List of emeralds by size *List of individual gemstones * List of gold nuggets by size *List of sapphires by size References External links * {{List of precious stones by size * Largest rough diamonds diamonds Diamonds Diamond is a solid form of the element carbon with its atoms arranged in a crystal structure called diamond cubic. Diamond is tasteless, odourless, strong, brittle solid, colourless in pure form, a poor conductor of electricity, and insol ... Diamonds, rough ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tennis Ball
A tennis ball is a small, hollow ball used in games of tennis and real tennis. Tennis balls are fluorescent yellow in Professional sports, professional competitions, but in Amateur sports, recreational play other colors are also used. Tennis balls are covered in a fibrous felt, which modifies their aerodynamic properties, and each has a white curvilinear oval covering it. Specifications Modern tennis balls must conform to certain size, weight, deformation, and bounce criteria to be approved for regulation play. The International Tennis Federation (ITF) defines the official diameter as . Balls must have masses in the range . A tennis ball generally has more of a nitrogen and oxygen mixture than the sea level ambient air pressure. Yellow and white are the only colors approved by the ITF. Most balls produced are a fluorescent color known as "optic yellow", first introduced in 1972 following research demonstrating they were more visible on television. What color to call the ball ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2019 In Botswana
Nineteen or 19 may refer to: * 19 (number) * One of the years 19 BC, AD 19, 1919, 2019 Films * ''19'' (film), a 2001 Japanese film * ''Nineteen'' (1987 film), a 1987 science fiction film * '' 19-Nineteen'', a 2009 South Korean film * '' Diciannove'', a 2024 Italian drama film informally referred to as "Nineteen" in some sources Science * Potassium, an alkali metal * 19 Fortuna, an asteroid Music * 19 (band), a Japanese pop music duo Albums * ''19'' (Adele album), 2008 * ''19'', a 2003 album by Alsou * ''19'', a 2006 album by Evan Yo * ''19'', a 2018 album by MHD * ''19'', one half of the double album '' 63/19'' by Kool A.D. * ''Number Nineteen'', a 1971 album by American jazz pianist Mal Waldron * ''XIX'' (EP), a 2019 EP by 1the9 Songs * "19" (song), a 1985 song by British musician Paul Hardcastle * "Stone in Focus", officially "#19", a composition by Aphex Twin * "Nineteen", a song from the 1992 album ''Refugee'' by Bad4Good * "Nineteen", a song from the 200 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Mines In Botswana
This list of mines in Botswana is subsidiary to the list of mines article and lists working, defunct and future mines in the country and is organised by the primary mineral output. For practical purposes stone, marble and other quarries may be included in this list. Diamond *Damtshaa diamond mine *Jwaneng diamond mine *Letlhakane diamond mine * Lerala diamond mine *Karowe diamond mine * Orapa diamond mine Copper-nickel BCl copper-nickel mine, Selibe Phikwe This mine is now closed Gold Francistown Golden Eagle Mine Mopane Mine Nickel * Phoenix nickel mine * Selkirk mine Coal * Letlhakane coal mine * Mea coal mine *Mmamabula *Morupule Colliery * Sese coal mine Uranium * Letlhakane mine Iron ore * Ikongwe Iron ore mine References {{reflist Botswana Mines Mine, mines, miners or mining may refer to: Extraction or digging *Miner, a person engaged in mining or digging *Mining, extraction of mineral resources from the ground through a mine Grammar *Mine, a first-perso ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Diamond Mines
There are a limited number of commercially available diamond mining, mines currently operating in the world, with the 50 largest mines accounting for approximately 90% of global supply. Diamonds are also mined alluvium, alluvially over disperse areas, where diamonds have been erosion, eroded out of the ground, deposited, and concentrated by water or weather action. There is also at least one example of a heritage diamond mine (Crater of Diamonds State Park). Africa Angola *Catoca diamond mine *Fucauma diamond mine *Luarica diamond mine Botswana *Damtshaa diamond mine *Jwaneng diamond mine *Letlhakane diamond mine *Orapa diamond mine *Karowe diamond mine *Lerala diamond mine South Africa *Baken diamond mine *Premier Mine, Cullinan diamond mine (previously "Premier mine") *Finsch diamond mine *Kimberley, Northern Cape *Koffiefontein mine *Venetia Diamond Mine, Venetia diamond mine *Royal Thulare Mine Others *Kao diamond mine, Lesotho *Baba Diamond Fields, Zimbabwe *Marange ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Diamonds
Diamond (gemstone), Diamonds occur naturally and vary in size, color, and quality, so the largest of a particular color may not be large in absolute terms, but may still be considered very desirable. Diamonds may also have high valuations in sale prices, and large ones invariably have a noteworthy ownership history. There is no agreed-upon measure of a large or a high-quality diamond, and new ones displace others on any subjective list, so strict inclusion criteria for notable diamonds are not attainable. List of diamonds See also * List of largest rough diamonds * List of Golconda diamonds * List of emeralds by size * List of individual gemstones * List of gold nuggets by size * List of pearls by size * List of sapphires by size References {{DEFAULTSORT:List Of Diamonds Diamond-related lists, Individual diamonds, * Gemstone-related lists, Diamonds ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kimberlite
Kimberlite is an igneous rock and a rare variant of peridotite. It is most commonly known as the main host matrix for diamonds. It is named after the town of Kimberley, Northern Cape, Kimberley in South Africa, where the discovery of an 83.5-Carat (mass), carat (16.70 g) diamond called the Star of South Africa (diamond), Star of South Africa in 1869 spawned a diamond rush and led to the excavation of the open-pit mine called the Big Hole. Previously, the term kimberlite has been applied to olivine lamproites as Kimberlite II, however this has been in error. Kimberlite occurs in the Earth's Crust (geology), crust in vertical structures known as Volcanic pipe, kimberlite pipes, as well as igneous Dike (geology), dykes and can also occur as horizontal Sill (geology), sills. Kimberlite pipes are the most important source of mined diamonds today. The consensus on kimberlites is that they are formed deep within Earth's mantle. Formation occurs at depths between 150 and 450 kilometres ( ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Artificial Intelligence
Artificial intelligence (AI) is the capability of computer, computational systems to perform tasks typically associated with human intelligence, such as learning, reasoning, problem-solving, perception, and decision-making. It is a field of research in computer science that develops and studies methods and software that enable machines to machine perception, perceive their environment and use machine learning, learning and intelligence to take actions that maximize their chances of achieving defined goals. High-profile applications of AI include advanced web search engines (e.g., Google Search); recommendation systems (used by YouTube, Amazon (company), Amazon, and Netflix); virtual assistants (e.g., Google Assistant, Siri, and Amazon Alexa, Alexa); autonomous vehicles (e.g., Waymo); Generative artificial intelligence, generative and Computational creativity, creative tools (e.g., ChatGPT and AI art); and Superintelligence, superhuman play and analysis in strategy games (e.g., ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diamond
Diamond is a Allotropes of carbon, solid form of the element carbon with its atoms arranged in a crystal structure called diamond cubic. Diamond is tasteless, odourless, strong, brittle solid, colourless in pure form, a poor conductor of electricity, and insoluble in water. Another solid form of carbon known as graphite is the Chemical stability, chemically stable form of carbon at Standard temperature and pressure, room temperature and pressure, but diamond is metastable and converts to it at a negligible rate under those conditions. Diamond has the highest Scratch hardness, hardness and thermal conductivity of any natural material, properties that are used in major industrial applications such as cutting and polishing tools. Because the arrangement of atoms in diamond is extremely rigid, few types of impurity can contaminate it (two exceptions are boron and nitrogen). Small numbers of lattice defect, defects or impurities (about one per million of lattice atoms) can color ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
