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Red Diamond
A red diamond is a diamond which displays red colour and exhibits the same mineral properties as colourless diamonds. Red diamonds are commonly known as the most expensive and the rarest diamond colour in the world, even more so than pink or blue diamonds, as very few red diamonds have been found. Red diamonds, just like pink diamonds, are greatly debated as to the source of their colour, but the gemological community most commonly attributes both colours to gliding atoms in the diamond's structure as it undergoes enormous pressure during its formation. Red diamonds are among the 12 colours of fancy colour diamonds, and have the most expensive price per carat. They will typically run in the hundreds of thousands of dollars per carat range. Since they are the rarest colour, it is difficult to find them in large sizes, and they are mostly found in sizes less than 1 carat. Red diamonds only exist with one colour intensity, Fancy, although their clarities can range from Flawless to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
DeYoung Red Diamond
The DeYoung Red Diamond is a 5.03- carat unmounted rare red diamond. It is the third-largest red diamond in the world, and the only one on public display. Sydney DeYoung (for whom the diamond is named) obtained the diamond, which was mistaken for a garnet, at a flea market. The diamond was given to the Smithsonian Institution after DeYoung's death in 1986. Description The DeYoung Red Diamond is a 5.03- carat unmounted diamond. It is a deep red color, with a slight tint of brown. Red diamonds are the rarest type of colored diamonds. The diamond is a modified round brilliant cut. The facets on the diamond's crown, which resemble kites, are split in two horizontally. This feature makes the DeYoung diamond more brilliant than other diamonds with an ordinary round brilliant cut. The DeYoung Red Diamond is the third-largest red diamond, behind only the 5.05-carat Kazanjian Red Diamond (second-largest) and the 5.11-carat Moussaieff Red Diamond (largest). Its clarity grade is VS-2 (Very ... [...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] |
Moussaieff Red Diamond
The Moussaieff Red Diamond (formerly known as the Red Shield Diamond) is a diamond measuring 5.11 carats (1.022 g) with a triangular brilliant cut (sometimes called a trillion or a trilliant cut), rated in color as Fancy Red by the Gemological Institute of America. It is the world's largest known red diamond, the rarest of all diamond colors. The Moussaieff Red was discovered by a Brazilian garimpeiro named Ze Tatu in a manual digging in the district of Major porto in 1989, in a region known as noroeste de minas in the state of Minas Gerais. The rough stone weighed 13.9 carats (2.78 g). The diamond was purchased and cut by the William Goldberg Diamond Corp., where it went by its original name, the Red Shield. It was purchased in 2001 or 2002 by Shlomo Moussaieff, an Israeli-born jewelry dealer in London. It is currently owned by Moussaieff Jewellers Ltd. The Moussaieff Red was displayed in 2003 as part of the Smithsonian Institution's "The Splendor of Diamonds" exhibit, alongsi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Argyle Mine
Argyle is an archaic spelling of Argyll, a county in western Scotland. Argyle may refer to: Places Australia * Argyle, Victoria * Argyle County, New South Wales **Electoral district of Argyle, a former electoral district for the Legislative Assembly of New South Wales * Argyle Downs, a pastoral lease in Western Australia * Lake Argyle, an artificial lake in Western Australia Canada * Argyle, Manitoba * Rural Municipality of Argyle, Manitoba * Argyle, Nova Scotia, municipality ** Argyle, Nova Scotia (community) ** Argyle (electoral district), Nova Scotia ** Argyle Sound, Nova Scotia ** Central Argyle, Nova Scotia ** Lower Argyle, Nova Scotia * Argyle (Guysborough), Nova Scotia * Argyle, Ontario * Argyle Shore Provincial Park, Prince Edward Island * Rural Municipality of Argyle No. 1, Saskatchewan Hong Kong * Argyle Street, Hong Kong United States * Argyle, Florida * Argyle, Georgia * Argyle, Illinois * Argyle, Iowa *Argyle, Kentucky * Argyle (Houma, Louisiana) * Argyle ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kazanjian Red Diamond
The Kazanjian Red Diamond, previously known as the Red Diamond, is a 5.05-carat red diamond. It was found in South Africa in the 1920s, and was cut in Amsterdam. The Nazis seized the diamond during World War II. It was rediscovered after the war, and changed owners multiple times before it was bought in 2007 by the Kazanjian Brothers. Description The Kazanjian Red Diamond is a 5.05- carat emerald-cut red diamond. Red diamonds are the rarest type of colored diamond. The diamond measures on the sides, and in depth. It is the second-largest red diamond ever found, behind only the 5.11-carat Moussaieff Red Diamond. History In the mid-1920s (possibly 1927), during a diamond rush in South Africa, a 35-carat piece of boart was found in Lichtenberg. The boart was sent to Goudvis Brothers, a firm in Amsterdam. There was initial disagreement over whether the boart was of any worth. Seven months were spent polishing and examining the stone, and the final 5.05-carat emerald-cut diamond was ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Russia
Russia (, , ), or the Russian Federation, is a List of transcontinental countries, transcontinental country spanning Eastern Europe and North Asia, Northern Asia. It is the List of countries and dependencies by area, largest country in the world, with its internationally recognised territory covering , and encompassing one-eighth of Earth's inhabitable landmass. Russia extends across Time in Russia, eleven time zones and shares Borders of Russia, land boundaries with fourteen countries, more than List of countries and territories by land borders, any other country but China. It is the List of countries and dependencies by population, world's ninth-most populous country and List of European countries by population, Europe's most populous country, with a population of 146 million people. The country's capital and List of cities and towns in Russia by population, largest city is Moscow, the List of European cities by population within city limits, largest city entirely within E ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brazil
Brazil ( pt, Brasil; ), officially the Federative Republic of Brazil (Portuguese: ), is the largest country in both South America and Latin America. At and with over 217 million people, Brazil is the world's fifth-largest country by area and the seventh most populous. Its capital is Brasília, and its most populous city is São Paulo. The federation is composed of the union of the 26 States of Brazil, states and the Federal District (Brazil), Federal District. It is the largest country to have Portuguese language, Portuguese as an List of territorial entities where Portuguese is an official language, official language and the only one in the Americas; one of the most Multiculturalism, multicultural and ethnically diverse nations, due to over a century of mass Immigration to Brazil, immigration from around the world; and the most populous Catholic Church by country, Roman Catholic-majority country. Bounded by the Atlantic Ocean on the east, Brazil has a Coastline of Brazi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kimberley, Western Australia
The Kimberley is the northernmost of the nine regions of Western Australia. It is bordered on the west by the Indian Ocean, on the north by the Timor Sea, on the south by the Great Sandy and Tanami deserts in the region of the Pilbara, and on the east by the Northern Territory. The region was named in 1879 by government surveyor Alexander Forrest after Secretary of State for the Colonies John Wodehouse, 1st Earl of Kimberley. History The Kimberley was one of the earliest settled parts of Australia, with the first humans landing about 65,000 years ago. They created a complex culture that developed over thousands of years. Yam ('' Dioscorea hastifolia'') agriculture was developed, and rock art suggests that this was where some of the earliest boomerangs were invented. The worship of Wandjina deities was most common in this region, and a complex theology dealing with the transmigration of souls was part of the local people's religious philosophy. In 1837, with expedition ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Argyle Diamond Mine
The Argyle Diamond Mine was a diamond mine located in the East Kimberley region in the remote north of Western Australia. Argyle was at times the largest diamond producer in the world by volume (14 million carats in 2018), although the proportion of gem-quality diamonds was low. It was the only known significant source of pink and red diamonds (producing over 90% of the world's supply), and additionally provided a large proportion of other naturally coloured diamonds, including champagne, cognac and rare blue diamonds. Mining operations ceased in November 2020, after 37 years of operations and producing more than 865 million carats of rough diamonds. Mine operator Rio Tinto planning to decommission the mine and rehabilitate the site at least through 2025. The Argyle diamond mine is also notable for being the first successful commercial diamond mine exploiting a volcanic pipe of lamproite, rather than the more usual kimberlite pipe; much earlier attempts to mine diamonds from ... [...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] |
Blue Diamond
Blue diamond is a type of diamond which exhibits all of the same inherent properties of the mineral except with the additional element of blue color in the stone. They are colored blue by trace amounts of boron that contaminate the crystalline lattice structure. Blue diamonds belong to a subcategory of diamonds called fancy color diamonds, the generic name for diamonds that exhibit intense color. Properties determining value The same four basic parameters that govern the grading of all gemstones are used to grade blue diamonds–the four Cs of Connoisseurship: ''color'', ''clarity,'' ''cut'' and ''carat weight''. Color is considered the absolute most important criterion in grading a blue diamond and determining its value. However, the most valuable of blue diamonds also exhibit the highest clarity grades. There is no known blue diamond with a completely flawless (F) clarity grading, although several are known which are graded Internally Flawless (IF). One of the earliest mentio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pink Diamond
Pink diamond is a type of diamond that has pink color. The source of their pink color is greatly debated in the gemological world but it is most commonly attributed to plastic deformation that these diamonds undergo during their formation. Pink diamonds belong to a subcategory of diamonds called color diamonds, the generic name for all diamonds that exhibit any sort of color. Pink diamonds range from flawless to included, as do white diamonds. Origin of the pink color Numerous theories have been posited as to how the pink is formed in pink diamonds. The prevailing theory is that the pink is caused when the diamond is subjected to shear pressure during its formation. A similar theory is being tested on pink diamonds that originated in the Argyle Mine in Kimberley, Western Australia. This theory posits that a seismic shock propelled colorless diamonds to the surface and altered their molecular structure, causing them to appear pink. Properties determining value The same four bas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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