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Jubilee Diamond
The Jubilee Diamond, originally known as the Reitz Diamond is a colourless, cushion-shaped diamond weighing 245.35 carats (49.07 grams), 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. The original stone, a rough octahedron weighing 650.80 carats (130.16 g), was discovered in 1895 at the Jagersfontein Mine in South Africa. A consortium of diamond merchants from London purchased it along with its even larger sister, the Excelsior, in 1896, and sent it to Amsterdam where it was polished by M.B. Barends. A 40 carat (8 g) chunk was removed, which itself yielded a 13.34 carat (2.668 g) pear-shaped gem eventually purchased by Carlos I of Portugal. Dorabji Tata acquired the Jubilee Diamond around 1900 and gave it to his wife Meherbai who used to wear it during ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jagersfontein Mine
Jagersfontein Mine was an open-pit mine in South Africa, located close to the town of Jagersfontein and about south-west of Bloemfontein."Jagersfontein Mine, Jagersfontein, Free State Province, South Africa" Mindat.org Places.co.za Since it was first established in 1870,Jagersfontein entry '''' [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Excelsior Diamond
The Excelsior Diamond is a gem-quality diamond, and was the largest known diamond in the world from the time of its discovery in 1893 until 1905, when the Cullinan Diamond was found. It was found on June 30, 1893 at the Jagersfontein Mine in South Africa, south east of Kimberley whose fame as a diamond mining center always overshadowed that of Jagersfontein. It had a blue-white tint and weighed 971 old carats or 995.2 metric carats (or 194 g). The Excelsior rates as the fourth largest rough diamond of gem quality ever found. It was ultimately cut into ten stones weighing from 13 to 68 carats. (2.6 to 13.6 g). Discovery The Excelsior Diamond was found on June 30, 1893 at the Jagersfontein Mine in the Orange Free State, one of the South African Republics during the second half of the 19th century, by a worker in a shovelful of gravel he was loading into a truck. Instead of handing it over to his overseer, he delivered it directly to the mine manager, who rewarded him with £500 in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diamonds Originating In South Africa
Diamond is a solid form of the element carbon with its atoms arranged in a crystal structure called diamond cubic. Another solid form of carbon known as graphite is the chemically stable form of carbon at room temperature and pressure, but diamond is metastable and converts to it at a negligible rate under those conditions. Diamond has the highest hardness and thermal conductivity of any natural material, properties that are used in major industrial applications such as cutting and polishing tools. They are also the reason that diamond anvil cells can subject materials to pressures found deep in the Earth. 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 defects or impurities (about one per million of lattice atoms) color diamond blue (boron), yellow (nitrogen), brown (defects), green (radiation exposure), purple, pink, orange, or red. Diamond also has a ver ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gemological Institute Of America
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. In 1953 the GIA developed its International Diamond Grading System and the "four Cs" (cut, clarity, color, and carat weight) as a standard to compare and evaluate the quality of diamonds. Today, the institute is headquartered in Carlsbad, California and operates in 13 countries, with 11 campuses, 9 laboratories and 4 research centers. History The story of the GIA begins in the 1 ... [...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] |
Sir Dorabji Tata And Allied Trusts
The Sir Dorabji Tata Trust was established by Sir Dorab Tata (fondly called ''Sir Dorabji''), the elder son of Tata Group founder Jamsetji Tata. Founded in 1932, it is one of the oldest non-sectarian philanthropic organisations in India. History Like his respected father, Sir Dorabji believed that one must make use of the wealth one had acquired for constructive purposes. So, in less than a year after his wife Meherbai's death, he donated all his wealth to the trust, insisting that it must be used "without any distinction of place, nationality or creed", for the advancement of learning and research, the relief of distress and other charitable purposes. He died three months later. The wealth that he turned over to the trust comprised his substantial share holdings in Tata Sons, Indian Hotels and allied companies, his landed properties and 21 pieces of jewellery left by his wife, including the famous Jubilee Diamond, estimated then to be of the value of Rs 10 million. Today, the ... [...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] |
Dorabji Tata
Sir Dorabji Tata (27 August 1859 – 3 June 1932) was an Indian businessman of the British Raj, and a key figure in the history and development of the Tata Group. He was knighted in 1910 for his contributions to industry in British India. Early life and education Dorab was the elder son of Hirabai and Parsi Zoroastrian Jamsetji Nusserwanji Tata. Through an aunt, Jerbai Tata, who married a Bombay merchant, Dorabji Saklatvala, he was a cousin of Shapurji Saklatvala who later became a Communist Member of the British Parliament.Article on Saklatvala by Mike Squires, who refers to Jamsetji as J.N. Tata. Tata received his primary education at the Proprietary High School in Bombay (now Mumbai) before travelling to England in 1875, where he was privately tutored. He entered Gonville and Caius College, Cambridge in 1877, where he remained for two years before returning to Bombay in 1879. He continued his studies at St. Xavier's College, Bombay, where he obtained a degree in 18 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carlos I Of Portugal
''Dom'' Carlos I (; English: King Charles of Portugal; 28 September 1863 – 1 February 1908), known as the Diplomat ( pt, o Diplomata), the Martyr ( pt, o Martirizado), and the Oceanographer ( pt, o Oceanógrafo), among many other names, was the King of Portugal from 1889 until his assassination in 1908. He was the first Portuguese king to die a violent death since King Sebastian in 1578. Early life Carlos was born in Lisbon, Portugal, the son of King Luís and Queen Maria Pia, daughter of King Victor Emmanuel II of Italy, and was a member of the House of Braganza."While remaining patrilineal dynasts of the duchy of Saxe-Coburg and Gotha according to pp. 88, 116 of the 1944 ''Almanach de Gotha'', Title 1, Chapter 1, Article 5 of th1838 Portuguese constitutiondeclared, with respect to Ferdinand II of Portugal's issue by his first wife, that 'the Most Serene House of Braganza is the reigning house of Portugal and continues through the Person of the Lady Queen Maria II' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
London
London is the capital and largest city of England and the United Kingdom, with a population of just under 9 million. It stands on the River Thames in south-east England at the head of a estuary down to the North Sea, and has been a major settlement for two millennia. The City of London, its ancient core and financial centre, was founded by the Romans as '' Londinium'' and retains its medieval boundaries.See also: Independent city § National capitals The City of Westminster, to the west of the City of London, has for centuries hosted the national government and parliament. Since the 19th century, the name "London" has also referred to the metropolis around this core, historically split between the counties of Middlesex, Essex, Surrey, Kent, and Hertfordshire, which largely comprises Greater London, governed by the Greater London Authority.The Greater London Authority consists of the Mayor of London and the London Assembly. The London Mayor is distinguished fr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
South Africa
South Africa, officially the Republic of South Africa (RSA), is the southernmost country in Africa. It is bounded to the south by of coastline that stretch along the South Atlantic and Indian Oceans; to the north by the neighbouring countries of Namibia, Botswana, and Zimbabwe; and to the east and northeast by Mozambique and Eswatini. It also completely enclaves the country Lesotho. It is the southernmost country on the mainland of the Old World, and the second-most populous country located entirely south of the equator, after Tanzania. South Africa is a biodiversity hotspot, with unique biomes, plant and animal life. With over 60 million people, the country is the world's 24th-most populous nation and covers an area of . South Africa has three capital cities, with the executive, judicial and legislative branches of government based in Pretoria, Bloemfontein, and Cape Town respectively. The largest city is Johannesburg. About 80% of the population are Black South Afri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Queen Victoria
Victoria (Alexandrina Victoria; 24 May 1819 – 22 January 1901) was Queen of the United Kingdom of Great Britain and Ireland from 20 June 1837 until Death and state funeral of Queen Victoria, her death in 1901. Her reign of 63 years and 216 days was longer than that of List of monarchs in Britain by length of reign, any previous British monarch and is known as the Victorian era. It was a period of industrial, political, scientific, and military change within the United Kingdom, and was marked by a great expansion of the British Empire. In 1876, the British Parliament voted to grant her the additional title of Empress of India. Victoria was the daughter of Prince Edward, Duke of Kent and Strathearn (the fourth son of King George III), and Princess Victoria of Saxe-Coburg-Saalfeld. After the deaths of her father and grandfather in 1820, she was Kensington System, raised under close supervision by her mother and her comptroller, John Conroy. She inherited the throne aged 18 af ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
