grade of diamonds

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• Diamonds as an investment — An uncut diamond, not showing the prized optical properties of cut and polished versions. Contents 1 History 2 Price …   Wikipedia

• grade — grade1 W3S3 [greıd] n ▬▬▬▬▬▬▬ 1¦(standard)¦ 2¦(rank)¦ 3¦(mark in school)¦ 4 make the grade 5¦(school year)¦ 6¦(slope)¦ ▬▬▬▬▬▬▬ [Date: 1500 1600; : French; Origin: Latin gradus step, d …   Dictionary of contemporary English

• Brown diamonds — A collection of brown diamonds in the Smithsonian. The pear shaped pendant at the bottom of the necklace weighs 67 carats (13 g). Brown diamonds are the most common color variety of natural diamonds. The brown color makes them less… …   Wikipedia

• List of diamonds — A number of large or extraordinary diamonds have gained fame, both as exquisite examples of the beautiful nature of diamonds, and because of the famous people who wore, bought, and sold them. A partial list of famous diamonds in history follows.… …   Wikipedia

• Petra Diamonds — Infobox Company company name = Petra Diamonds company company type = Public (aim|PDL) foundation = location = flagicon|Jersey Jersey key people = Adonis Pouroulis, Chairman Johan Dippenaar, CEO industry = Diamond Mining revenue = US $76.9 million …   Wikipedia

• Ore grade — is a measure that describes the concentration of a valuable natural material (such as metals or minerals) in its surrounding ore. Ore grade is used to assess the economic feasibility of a mining operation: the cost of extracting a natural… …   Wikipedia

• Diamond color — Part of a series on Diamonds Material Material properties Crystallographic defects Formatio …   Wikipedia

• Order of St Alexander — For the Russian military honor, see Order of St. Alexander Nevsky. Order of St Alexander …   Wikipedia

• Nooitgedacht Glacial Pavements — The Nooitgedacht Glacial Pavements comprise a geological feature between Kimberley and Barkly West, South Africa, pertaining to the Palaeozoic age Dwyka Ice Age, or Karoo Ice Age, (some 300 million years ago) where the glacially scoured (smoothed …   Wikipedia

• Bort — or boart is a term used in the diamond industry to refer to shards of gem grade/quality diamonds. In the manufacturing and heavy industries, bort is used to describe dark, imperfectly formed/crystallized diamonds of varying levels of opacity. The …   Wikipedia

• Discovery Handicap — Grade III race Discovery Handicap Location Aqueduct Racetrack, Queens, New York, United States Inaugurated 1945 Race type Thoroughbred …   Wikipedia