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Cut (gems)
When a gemstone is desired to be used in jewelry, it is cut depending on the size and shape of the rough stone, as well as the desired piece of jewelry to be made. As a general rule, a cut gemstone will reduce the mass (described in the carat) by about 50 percent. There are several techniques available to work with gemstones; among them are sawing, grinding, sanding, lapping, polishing, grilling, and tumbling. The diamond cut planning stage is a complex process that requires the cutter to work with unique rough stones. Very often, the location of the inclusions in a rough stone will determine the type of shape to which a diamond may be cut. For economic reasons, most diamonds are cut to retain weight instead of maximizing brilliance. Types A list of cuts: * Antwerp rose cut *Asscher cut *Baguette cut * Barion cut * Brilliant cut *Briolette *Cabochon * Calla Cut * Ceylon cut *Cushion or old mine cut * Double Dutch rose cut *Emerald cut * Flanders cut *French cut * Heart brill ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Close-up Of Glass Crystal With Many Facets Causing Dispersion Spectrum From Light
A close-up or closeup in filmmaking, television production, still photography, and the comic strip medium is a type of shot that tightly frames a person or object. Close-ups are one of the standard shots used regularly with medium and long shots (cinematic techniques). Close-ups display the most detail, but they do not include the broader scene. Moving toward or away from a close-up is a common type of zooming. A close up is taken from head to neck, giving the viewer a detailed view of the subject's face. History Most early filmmakers, such as Thomas Edison, Auguste and Louis Lumière and Georges Méliès, tended not to use close-ups and preferred to frame their subjects in long shots, similar to the stage. Film historians disagree as to the filmmaker who first used a close-up. One of the best claims is for George Albert Smith in Hove, who used medium close-ups in films as early as 1898 and by 1900 was incorporating extreme close-ups in films such as ''As Seen Through a Tele ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
India Cut
India, officially the Republic of India (Hindi: ), is a country in South Asia. It is the seventh-largest country by area, the second-most populous country, and the most populous democracy in the world. Bounded by the Indian Ocean on the south, the Arabian Sea on the southwest, and the Bay of Bengal on the southeast, it shares land borders with Pakistan to the west; China, Nepal, and Bhutan to the north; and Bangladesh and Myanmar to the east. In the Indian Ocean, India is in the vicinity of Sri Lanka and the Maldives; its Andaman and Nicobar Islands share a maritime border with Thailand, Myanmar, and Indonesia. Modern humans arrived on the Indian subcontinent from Africa no later than 55,000 years ago., "Y-Chromosome and Mt-DNA data support the colonization of South Asia by modern humans originating in Africa. ... Coalescence dates for most non-European populations average to between 73–55 ka.", "Modern human beings—''Homo sapiens''—originated in Africa. Then, interm ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radiant Cut
A diamond cut is a style or design guide used when shaping a diamond for polishing such as the brilliant cut. Cut does not refer to shape (pear, oval), but the symmetry, proportioning and polish of a diamond. The cut of a diamond greatly affects a diamond's brilliance; this means if it is cut poorly, it will be less luminous. In order to best use a diamond gemstone's material properties, a number of different diamond cuts have been developed. A diamond cut constitutes a more or less symmetrical arrangement of facets, which together modify the shape and appearance of a diamond crystal. Diamond cutters must consider several factors, such as the shape and size of the crystal, when choosing a cut. The practical history of diamond cuts can be traced back to the Middle Ages, while their theoretical basis was not developed until the turn of the 20th century. Design, creation and innovation continue to the present day: new technology—notably laser cutting and computer-aided design—ha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Princess Cut
The princess cut (technical name 'square modified brilliant') is a diamond cut shape often used in engagement rings. The name dates back to the 1960s, while the princess cut as it exists was created by Betazel Ambar, Ygal Perlman, and Israel Itzkowitz in 1980. The cut has a square or rectangular shape when viewed from above, and from the side is similar to that of an inverted pyramid with four beveled sides. Its popularity was at its highest in the 80s and 90s, though its popularity was high in the 2000s as well. It is the second most popular diamond cut, below round and above cushion. Characteristics The face-up shape of the princess cut (technical name 'square modified brilliant' is square or rectangular and the profile or side-on shape is similar to that of an inverted pyramid with four beveled sides. The design is sometimes considered feminine. When looked down on, it bares an X shape. They are slightly less expensive and less cut than round diamonds. The sharp points of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pendeloque
A pendeloque is a pear-shaped modification of the round brilliant cut used for diamonds and other gemstones. See also * Briolette * Cut (gems) When a gemstone is desired to be used in jewelry, it is cut depending on the size and shape of the rough stone, as well as the desired piece of jewelry to be made. As a general rule, a cut gemstone will reduce the mass (described in the carat) b ... References {{reflist Gemstone cutting ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pear Or Drop Brilliant
Pears are fruits produced and consumed around the world, growing on a tree and harvested in the Northern Hemisphere in late summer into October. The pear tree and shrub are a species of genus ''Pyrus'' , in the family Rosaceae, bearing the pomaceous fruit of the same name. Several species of pears are valued for their edible fruit and juices, while others are cultivated as trees. The tree is medium-sized and native to coastal and mildly temperate regions of Europe, North Africa, and Asia. Pear wood is one of the preferred materials in the manufacture of high-quality woodwind instruments and furniture. About 3,000 known varieties of pears are grown worldwide, which vary in both shape and taste. The fruit is consumed fresh, canned, as juice, or dried. Etymology The word ''pear'' is probably from Germanic ''pera'' as a loanword of Vulgar Latin ''pira'', the plural of ''pirum'', akin to Greek ''apios'' (from Mycenaean ''ápisos''), of Semitic origin (''pirâ''), meaning "fruit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oval Brilliant
An oval () is a closed curve in a plane which resembles the outline of an egg. The term is not very specific, but in some areas (projective geometry, technical drawing, etc.) it is given a more precise definition, which may include either one or two axes of symmetry of an ellipse. In common English, the term is used in a broader sense: any shape which reminds one of an egg. The three-dimensional version of an oval is called an ovoid. Oval in geometry The term oval when used to describe curves in geometry is not well-defined, except in the context of projective geometry. Many distinct curves are commonly called ovals or are said to have an "oval shape". Generally, to be called an oval, a plane curve should ''resemble'' the outline of an egg or an ellipse. In particular, these are common traits of ovals: * they are differentiable (smooth-looking), simple (not self-intersecting), convex, closed, plane curves; * their shape does not depart much from that of an ellipse, and * an ov ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Obus Cut
The Obus (French for " cannon shell") was a French automobile manufactured from 1907 until 1908. A voiturette, it was produced by A. Souriau of Montoire Montoire-sur-le-Loir (, literally ''Montoire on the Loir''), commonly known as Montoire, is a commune near Vendôme, in the Loir-et-Cher department in Centre-Val de Loire, France. History Montoire-sur-le-Loir is known as the location where, .... References * David Burgess Wise, ''The New Illustrated Encyclopedia of Automobiles''. Defunct motor vehicle manufacturers of France {{brass-auto-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mogul Cut
Mogul may refer to: History *Mughal Empire, or any member of its ruling dynasty Persons *Magnate **Mogul, Secret Service codename for President Trump **Business magnate, a prominent person in a particular industry **Media mogul, a person who controls, either through personal ownership or a dominant position, any media enterprise Technology *Mogul (website), a social media network for women to share information *Mogul lamp (or six way lamp), a floor lamp which has a large center light bulb surrounded by three (or four) smaller bulbs *Mogul base, an E39 (39 mm) Edison screw fitting used in the above lamps, and some discharge lamps * HTC Mogul, a Windows Mobile 6.0/6.1 PDA * IHC Mogul, an early tractor by International Harvester *Starch mogul, a machine that moulds jelly beans or gummy candies in trays filled with cornstarch. Entertainment *''The Troubleshooters'', or ''Mogul'', a British television series made by the BBC between 1965 and 1972 *'' The Moguls'', a 2005 comedy film ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Magna Brilliant
Magna may refer to: Companies * Magna (bicycle company) * Magna Corporation, an American public company * Magna Entertainment Corp., gaming and horse racing company * Magna Home Entertainment, entertainment distributor also known as Magna Pacific * Magna International, Canadian automotive supplier * Magna Publishing Group, American publisher of pornography * Magna Steyr, automobile manufacturer in Graz, Austria Ancient Rome * Magnis (Carvoran), a now ruined Roman fort, also known as Magna, at Carvoran, Northumberland, UK * Leptis Magna, ancient Roman city in Libya * Plancia Magna ( fl. 1st century CE), prominent woman from Anatolia during the Roman Empire Other * ''Magna'' (moth), genus of the family Erebidae * Magna (paint), brand name of an acrylic resin paint * Magna, Utah * Mitsubishi Magna, automobile * Honda Magna, motorcycle * ''Magna cum laude'', distinction with which an academic degree is earned * Magna Defender, character from the ''Power Rangers Lost Galaxy'' TV se ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lozenge Cut , also called Lozenge, an arab sweet
{{Disambiguation ...
Lozenge or losange may refer to: *Lozenge (shape), a type of rhombus *Throat lozenge, a tablet intended to be dissolved slowly in the mouth to suppress throat ailments *Lozenge (heraldry), a diamond-shaped object that can be placed on the field of a shield *Les films du losange, a film production company *Lauzinaj ''Lauzinaj,'' also spelled ''lawzinaj'', ''lawzinaq'', ''luzina'' (Latin: ''losenges'', ''lesynges'') is an almond-based confection known from medieval Arab cuisine. Described as the "food of kings" and "supreme judge of all sweets", by the 13th-ce ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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