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Yogo Sapphire
Yogo sapphires are blue sapphires, a colored variety of corundum, found in Montana, primarily in Yogo Gulch (part of the Little Belt Mountains) in Judith Basin County, Montana. Yogo sapphires are typically cornflower blue, a result of trace amounts of iron and titanium. They have high uniform clarity and maintain their brilliance under artificial light. Because Yogo sapphires occur within a vertically dipping resistive igneous dike, mining efforts have been sporadic and rarely profitable. It is estimated that at least 28 million carats () of Yogo sapphires are still in the ground. Jewelry containing Yogo sapphires was given to First Ladies Florence Harding and Bess Truman; in addition, many gems were sold in Europe, though promoters' claims that Yogo sapphires are in the crown jewels of England or the engagement ring of Princess Diana are dubious. Today, several Yogo sapphires are part of the Smithsonian Institution's gem collection. Yogo sapphires were not initially r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Titanium
Titanium is a chemical element with the symbol Ti and atomic number 22. Found in nature only as an oxide, it can be reduced to produce a lustrous transition metal with a silver color, low density, and high strength, resistant to corrosion in sea water, aqua regia, and chlorine. Titanium was discovered in Cornwall, Great Britain, by William Gregor in 1791 and was named by Martin Heinrich Klaproth after the Titans of Greek mythology. The element occurs within a number of minerals, principally rutile and ilmenite, which are widely distributed in the Earth's crust and lithosphere; it is found in almost all living things, as well as bodies of water, rocks, and soils. The metal is extracted from its principal mineral ores by the Kroll and Hunter processes. The most common compound, titanium dioxide, is a popular photocatalyst and is used in the manufacture of white pigments. Other compounds include titanium tetrachloride (TiCl4), a component of smoke screens and catalysts; and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tiffany's
Tiffany & Co. (colloquially known as Tiffany's) is a high-end luxury jewelry and specialty retailer, headquartered on Fifth Avenue in Manhattan. 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. Its name and branding are licensed to Coty for fragrances and to Luxottica for eyewear. Tiffany & Co. was founded in 1837 by the jeweler Charles Lewis Tiffany and became famous in the early 20th century under the artistic direction of his son Louis Comfort Tiffany. In 2018 net sales totaled US$4.44 billion. In 2019 Tiffany operated 326 stores globally in countries such as the United States, Japan, and Canada, as well as Europe, the Latin America and Pacific Asia regions. On January 7, 2021, French multinational LVMH Moà ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alluvium
Alluvium (from Latin ''alluvius'', from ''alluere'' 'to wash against') is loose clay, silt, sand, or gravel that has been deposited by running water in a stream bed, on a floodplain, in an alluvial fan or beach, or in similar settings. Alluvium is also sometimes called alluvial deposit. Alluvium is typically geologically young and is not consolidated into solid rock. Sediments deposited underwater, in seas, estuaries, lakes, or ponds, are not described as alluvium. Floodplain alluvium can be highly fertile, and supported some of the earliest human civilizations. Definitions The present consensus is that "alluvium" refers to loose sediments of all types deposited by running water in floodplains or in alluvial fans or related landforms. However, the meaning of the term has varied considerably since it was first defined in the French dictionary of Antoine Furetière, posthumously published in 1690. Drawing upon concepts from Roman law, Furetière defined ''alluvion'' (the F ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Smithsonian Institution
The Smithsonian Institution ( ), or simply the Smithsonian, is a group of museums and education and research centers, the largest such complex in the world, created by the U.S. government "for the increase and diffusion of knowledge". Founded on August 10, 1846, it operates as a trust instrumentality and is not formally a part of any of the three branches of the federal government. The institution is named after its founding donor, British scientist James Smithson. It was originally organized as the United States National Museum, but that name ceased to exist administratively in 1967. Called "the nation's attic" for its eclectic holdings of 154 million items, the institution's 19 museums, 21 libraries, nine research centers, and zoo include historical and architectural landmarks, mostly located in the District of Columbia. Additional facilities are located in Maryland, New York, and Virginia. More than 200 institutions and museums in 45 states,States without Smithsonian ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diana, Princess Of Wales
Diana, Princess of Wales (born Diana Frances Spencer; 1 July 1961 – 31 August 1997) was a member of the British royal family. She was the first wife of King Charles III (then Prince of Wales) and mother of Princes William and Harry. Her activism and glamour made her an international icon, and earned her enduring popularity, as well as almost unprecedented public scrutiny. Diana was born into the British nobility, and grew up close to the royal family on their Sandringham estate. In 1981, while working as a nursery teacher's assistant, she became engaged to the Prince of Wales, the eldest son of Queen Elizabeth II. Their wedding took place at St Paul's Cathedral in 1981 and made her Princess of Wales, a role in which she was enthusiastically received by the public. The couple had two sons, William and Harry, who were then second and third in the line of succession to the British throne. Diana's marriage to Charles suffered due to their incompatibility and extramarital af ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bess Truman
Elizabeth Virginia Truman ('' née'' Wallace; February 13, 1885October 18, 1982) was the wife of President Harry S. Truman and the first lady of the United States from 1945 to 1953. She also served as the second lady of the United States from January to April 1945. She currently holds the record of longest-lived first lady and longest-lived second lady, at . She was born in Independence, Missouri, where she kept a home her entire life. She had known Harry since they were children, though she did not return his affections until adulthood. She was strongly affected by the suicide of her father when she was 18 years old, which shaped her opinions about privacy from the public eye and the responsibilities of a spouse. Bess and Harry married in 1919, and Bess would spend the following years managing the Truman household and working in her husband's offices as his political career advanced. She was apprehensive about Harry becoming vice president in 1944, and she was deeply upset when ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Florence Harding
Florence Mabel Harding (n̩e Kling; August 15, 1860 РNovember 21, 1924) was the first lady of the United States from 1921 until her husband's death in 1923 as the wife of President Warren G. Harding. Florence first married Pete De Wolfe and had a son, Marshall. After divorcing him, she married the somewhat-younger Harding when he was a newspaper publisher in Ohio, and she was acknowledged as the brains behind the business. Known as The Duchess, she adapted well to the White House, where she gave notably elegant parties. Early life She was born Florence Mabel Kling above her father's hardware store at 126 South Main Street in Marion, Ohio, on August 15, 1860. Florence was the eldest of three children of Amos Kling, a prominent Marion accountant and businessman of German descent, and Louisa Bouton Kling, whose French Huguenot ancestors had fled religious persecution. Her younger brothers were Clifford, born in 1861, and Vetallis, born in 1864. Florence attended school at Un ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dike (geology)
A dike or dyke, in Geology, geological usage, is a sheet of rock that is formed in a Fracture (geology), fracture of a pre-existing rock body. Dikes can be either Intrusive rock, magmatic or Sedimentary rock, sedimentary in origin. Magmatic dikes form when magma flows into a crack then solidifies as a sheet intrusion, either cutting across layers of rock or through a contiguous mass of rock. Clastic dikes are formed when sediment fills a pre-existing crack.Essentials of Geology, 3rd Ed, Stephen Marshak Magmatic dikes A magmatic dike is a sheet of igneous rock that cuts across older rock beds. It is formed when magma fills a fracture in the older beds and then cools and solidifies. The dike rock is usually more resistant to weathering than the surrounding rock, so that erosion exposes the dike as a natural wall or ridge. It is from these natural walls that dikes get their name. Dikes preserve a record of the fissures through which most mafic magma (fluid magma low in silica) reac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
