Asscher, JosephJoseph Asscher was an eminent diamond cutter who cut the 3,106 carat Cullinan diamond. Asscher worked in Amsterdam. In 1902, his company, the Asscher Diamond Co.
Diamond Cutter - (a) Any workman engaged in the cutting and polishing of diamonds. (b) One who rounds up rough diamonds as a step in the fashioning of brilliants.
Diamond Cutter
The person who cuts and polishes rough diamonds and convert them into finished diamonds.
Diamond Cutting ...
Koop Diamond Cutters Incorporated - Homepage
Koop Diamond Cutters Incorporated, manufacturer of fine wholesale and retail jewelry, custom jewelry, loose stones, and jewelry accessories.
Diamond Cutters in Antwerp c. 1906
Diamond Bourse c. 1904
During WWI's "Siege of Antwerp" in 1914, war took its toll yet again, ...
Diamond Cutters take advantage of as much of the rough rock as they can. The more Diamond they can get out of the rock, the more profit everyone will make. See image below.
Diamond cutter who grinds or cuts the first 18 facets being table, culet, and first eight facets on the crown and pavilion. A brillianteer polished the final 40 facets.
Blood Diamond
Blue Book ...
Famed diamond cutter Gabi Tolkowsky pays homage to his 273.85-carat Centenary with the Pink Sun Rise, a 29.78-carat diamond with a design similar to the Centenary's.
By the diamond cutter's art these crystals are carved into gems of spectacular and whimsical beauty. A cutter's skill will produce a diamond of the greatest size with the fewest flaws and the most brilliance.
Renowned diamond cutter Gabriel Tolkowsky is quoted in The Telegraph as saying the re-cut is the "end of culture.
blocker A diamond cutter who specializes in the first eighteen facets of the diamond. Usually this applies to production shops that have several different specialists that only complete certain stages of the polishing process.
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Recent research into a diamond's optics has confirmed what many diamond cutters have been saying for decades - that there are many combinations of angles and proportions that create a beautiful diamond.
The diamond market was saved by the simple expedient of monopolistic practices on the part of the Antwerp Diamond Cutters Guild, ...
Developed by South African diamond cutter Basil Watermeyer in 1971, barion cuts allow adaptation of the round brilliant style of pavilion facets to angular shapes, such as the emerald, square emerald, kite, triangle, pentagon and hexagon.
Diamond cutters try to stay close to these ideal proportions but must also consider the possibilities of excessive weight loss. A cutters goal is to strike a balance which will yield the greatest value and best appearance for a finished Diamond.
Culet: A tiny flat facet that diamond cutters sometimes add at the bottom of a diamond''s pavilion. Its purpose is to protect the tip of the pavilion from being chipped or damaged.
Diamond cutters sometimes sacrifice ideal proportions to end up with a larger, more profitable stone.
When creating the finished diamond, there are reasons why a diamond cutter makes compromises.
The Sancy was reported to be taken from India by a Venetian diamond cutter secretly. In 1570 the Sancy was purchased by Nicholas Harlai, the "Seigneur de Sancy" in Constantinople.
We've all seen photos or videos of that tense moment when the diamond cutter inserts the wedge at a particular spot on the diamond and strikes it with a mallet.
The skill of a diamond cutter is required to unlock the extraordinary and unique beauty of a diamond. Many gemologists believe this is the most important - though most misunderstood - of The Four "C"s that determine a diamond's quality and value.
Symmetry: A grade given to the arrangement of the facets and finished angles, created by the diamond cutter when cutting the diamond from its rough to polished form. Grades range from poor to excellent.
Diamond cutters make every effort to cut a stone so that inclusions are not visible through the table of the finished diamond. The preferred position for inclusions is under the bezel facets or near the girdle because they are harder to see there.
His father worked for years as a diamond cutter and polisher abroad, opening his own fine jewelry store when he moved to the states.
Naturals are traces of the natural crystal face of the rough diamond that are left behind by the diamond cutter to retain diamond weight.
First, you are paying for a highly skilled diamond cutter's time, and it can take many hours to get all the proportions and angles to fall within the Ideal or SuperIdeal ranges.
(developed by the New York firm "King Diamond Cutters".) (Fig 357) This cut has twelve table facets instead of the eight of a normal brilliant, so that automatically the number of the other facets are increased:
crown ...
Symmetry: Symmetry is the arrangement of the facets and finished angles created by the diamond cutter. Excellent symmetry of a well cut and well proportioned diamond can have a great effect on the diamond's brilliance and fire.
The finishing of a diamond's facets by a diamond cutter. Polish is graded on the scale from poor to excellent.
Polish lines
White lines that appear on a diamond due to polishing. Caused usually because of uneven surface of a diamond.
Asscher, Joseph: An eminent diamond cutter from Amsterdam who cut the 3,106 carat Cullinan diamond. In 1902 the Asscher Diamond Co. developed and patented the Asscher cut.
Culet: A very small flat facet that diamond cutters commonly add at the base of a diamond's pavilion. Its purpose is to protect the tip of the pavilion from being chipped or damaged.
AGS laboratories serve an international clientele of retail jewelers, wholesale suppliers, diamond cutters and manufacturers. AGS' Diamond Quality Document or DQD provides information on all 4 C's of diamond grading.
Round Brilliant-Cut
Diamond cutters have developed this cut over hundreds of years. The round cut brings out a diamond's brilliance, dispersion and scintillation.
Many diamond cutters now specialize in creating ideal proportions, and such stones have become quite popular. Ideal Cut diamonds command a slight premium because of 1) the extra care and skill needed during cutting, 2) more of the rough is usually ...
All aspects of a diamond's appearance those are due to the diamond cutter's skill - including polish, girdle quality and faceting precision.
Flourescence ...
Round Diamond:The cut arrangement and proportions of the round diamond are based on the 57-facet design established in 1919 by diamond cutter Marcel Tolkowsky. Today, round diamond cut is graded based on proportions and diamond quality standards.
Asscher Cut
Asscher Cut refers to a particular cut of a diamond. It was invented by Joseph Asscher, a diamond cutter, who opened his own company in 1902. It was a popular cut during for Art Deco jewelry.
Heart
Heart-shaped diamonds are a popular choice for the romantically inclined. This is a shape which demands an expert diamond cutter to bring out the natural brilliance of the diamond while crafting the best heart proportions.
In summary, the true value of a round brilliant diamond will be a combination of many different natural occurring and human influenced factors. The skill of a diamond cutter can add value to a medium to fine clarity and color diamond by bringing out ...
Asscher Cut: A cut of diamond popular in Art Deco jewelry. It was the forerunner to the emerald cut. Invented by Joseph Asscher, diamond cutter from Amsterdam.
Asterism: A star shaped light that reflects from some gemstones.
Lapidary: A cutter and polisher of colored gemstones, as opposed to a diamond cutter, who only polishes diamonds.
Finish: Any part of the diamond that is not natural to its appearance. Finish describes things added by a diamond cutter.
In the turn of 20th century, the city started its journey to become the nerve center of the diamond industry in the country. According to the local lore the initial set up was based on the expertise of the East African diamond cutters who were ...
In some diamonds, the clarity grade may be determined mainly by the presence of just one or two dark included crystals in a diamond that is otherwise relatively free of inclusions. In certain circumstances, the diamond cutter will decide to use a ...
Hard stone carving is the term in art history for the objects produced and the craft. Diamond cutters are generally not referred to as lapidaries, due to the specialized techniques which are required to work diamond.
Gradings E, F and, G [called either 'colorless' or 'near-colorless'], are considered the best and are saved for the most skilled diamond cutters, although color-gradings of H, I, ...
When a round diamond is cut to ideal proportions, light will bounce freely within the diamond, and reflect back out of the crown without escaping through the opposite side or the bottom of the stone. The skill and experience of the diamond cutter ...
easier now that they've added a real wine cellar: "For years, we didn't have a place to store them - we'd drink everything we bought!" Nearby, floor-to-ceiling glass shelves display Bill's collection of antique lapidary tools, from diamond cutters to ...
 See also: Diamond cut, Diamond, Stone, Jewel, Cut
  
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