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In 2015, Atlas Obscura raised its first round of major funding, securing $2 million from a range of investors and angels including The New York Times. [6] In September 2016, the company published its first book, Atlas Obscura: An Explorer's Guide to the World's Hidden Wonders written by Foer, Thuras, and Ella Morton under Workman Publishing ...
An example of this is the marquise cut diamond which was popular in the 1970s to 1980s. In later decades, jewelers had little success in selling this shape in comparison to other shapes like the oval or pear shape. [citation needed] The marquise can be cut into an oval diamond by any diamond cutter with a loss of 5 to 10% in total weight.
A diamond cut is a style or design guide used when shaping a diamond for polishing such as the brilliant cut. Cut refers to shape (pear, oval), and also the symmetry, proportioning and polish of a diamond. The cut of a diamond greatly affects a diamond's brilliance—a poorly-cut diamond is less luminous.
A diamond blade is a saw blade which has diamonds fixed on its edge for cutting hard or abrasive materials. There are many types of diamond blade, and they have many uses, including cutting stone, concrete, asphalt, bricks, coal balls, glass, and ceramics in the construction industry; cutting semiconductor materials in the semiconductor ...
David A. Plotz [2] (born January 31, 1970) [3] is an American journalist and former CEO of Atlas Obscura, an online magazine devoted to discovery and exploration. [4] A writer with Slate since its inception in 1996, Plotz was the online magazine's editor from June 2008 until July 2014, [5] succeeding Jacob Weisberg. [6]
Metal-bonded diamond tools: The tool's bonding material is sintered metal containing diamond grit. The functional parts of the tool are usually diamond segments. These tools include metal-bonded diamond saw blades, diamond grinding cup wheels, diamond core drill bits, etc. For metal-bonded diamond tools, the bond is one of the prime factors ...
Marcel Tolkowsky found that if a diamond was cut too deep or shallow then light would escape out the sides or bottom of the diamond, resulting in a loss of brilliance (white light reflected up through the top of a diamond), fire (colored light reflected from within a diamond), and sparkle (combination of fire and brilliance). [4]
During this time, Gabi Tolkowsky was again selected by the De Beers group in order to design and cut the Golden Jubilee Diamond. The Golden Jubilee is the largest faceted diamond in the world, weighing 545.67 carats (109.134 g), more than the Cullinan Diamond. The diamond was a 755.50-carat (151.100 g) rough stone.
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