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  2. Diamonds as an investment - Wikipedia

    en.wikipedia.org/wiki/Diamonds_as_an_investment

    Stones near the top of a size band (or rarer fancy coloured varieties) tend to be uprated slightly. Some of the price jumps are related to marketing and consumer expectations. For example, a buyer expecting a 1 carat (200 mg) diamond solitaire engagement ring may be unwilling to accept a 0.99 carats (198 mg) diamond. [citation needed]

  3. All That Glitters: Britain's Next Jewellery Star series 1

    en.wikipedia.org/wiki/All_That_Glitters:_Britain...

    Diamond mounter: Hayward's Heath Kim Styles [2] 46: Sculptural jeweller: Portsmouth Lee [2] 49: Jewellery business owner: South Wales Naomi [2] 23: Trainee goldsmith: Sussex Nicola [2] 25: Art graduate: Hereford Sonny Bailey-Aird [2] 26: Trained goldsmith: North London Tamara Gomez [2] 47: Jewellery business owner: Central London

  4. Rapaport Diamond Report - Wikipedia

    en.wikipedia.org/wiki/Rapaport_Diamond_Report

    Each grid has the clarity options on the horizontal line and the color options on the vertical line. In order to calculate the price of a diamond according to the Rapaport Price List, you need to know the size, color and clarity of the diamond. The price listed based on this information is in hundreds of dollars per carat. [3]

  5. 813-karat diamond was just sold as the most expensive diamond ...

    www.aol.com/news/2016-05-09-813-karat-diamond...

    The 1,109-karat diamond is estimated to sell for close to a whopping $86M, if it goes for the same price-per-karat as "The Constellation" sold for. Quite the pricey investment, but diamonds are ...

  6. Diamond (gemstone) - Wikipedia

    en.wikipedia.org/wiki/Diamond_(gemstone)

    Since the per carat price of diamond shifts around key milestones (such as 1.00 carat (200 mg)), many one-carat diamonds are the result of compromising cut for carat. Some jewelry experts advise consumers to buy a 0.99-carat (198 mg) diamond for its better price or buy a 1.10-carat (220 mg) diamond for its better cut, avoiding a 1.00-carat (200 ...

  7. 'Antiques Roadshow': diamond and ruby jewelry worth a fortune

    www.aol.com/news/2014-08-12-antiques-roadshow...

    On "Antiques Roadshow" we took a trip back to 1998 when a woman brought in a gorgeous diamond and ruby jewelry collection she inherited from her great aunt, who was married to a congressman back ...

  8. Gemological Institute of America - Wikipedia

    en.wikipedia.org/wiki/Gemological_Institute_of...

    Diamond reports from GIA (as well as other, for-profit sources) are now demanded by most consumers purchasing diamonds over a certain size, typically for over 0.5 carat (100 mg), and almost always for over 1.0 carat (200 mg), and are considered an important tool in guaranteeing that a diamond is accurately represented to a potential buyer.

  9. Carat (mass) - Wikipedia

    en.wikipedia.org/wiki/Carat_(mass)

    The carat (ct) is a unit of mass equal to 200 mg (0.00705 oz; 0.00643 ozt), which is used for measuring gemstones and pearls. The current definition, sometimes known as the metric carat, was adopted in 1907 at the Fourth General Conference on Weights and Measures, [1] [2] and soon afterwards in many countries around the world.