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Four Cs may refer to: Four Cs (education), a group of learning competencies and skills in 21st century learning; Diamond (gemstone), the Four Cs are carat, cut, color, and clarity; Marketing mix, may refer to two possible marketing-related concepts: Four 'C's in 7Cs compass model (Co-marketing) Four 'C's in consumer-oriented model
Most gem diamonds are traded on the wholesale market based on single values for each of the four Cs; for example knowing that a diamond is rated as 1.5 carats (300 mg), VS2 clarity, F color, excellent cut round brilliant, is enough to reasonably establish an expected price range.
Industrial diamonds are valued mostly for their hardness and thermal conductivity, making many of the gemological characteristics of diamonds, such as the 4 Cs, irrelevant for most applications. Eighty percent of mined diamonds (equal to about 135,000,000 carats (27,000 kg) annually) are unsuitable for use as gemstones and are used industrially ...
Diamond clarity is the quality of diamonds that relates to the existence and visual appearance of internal characteristics of a diamond called inclusions, and surface defects, called blemishes. Clarity is one of the four Cs of diamond grading, the others being carat , color , and cut .
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. [2] Today, [when?] the institute is headquartered in Carlsbad, California, and operates in 13 countries, with 11 campuses, 9 laboratories, and 4 research centers.
The price of diamonds depends mainly on the 4 C's of diamonds - carat, color, clarity, cut. Because of this pricing system large gemstones are worth more than a comparable mass of smaller stones. For this reason a successful diamond mining operation can't rely solely on the mass of carats recovered. The Kelsey Lake mine has produced some large ...
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