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2. The Winston Blue - Wikipedia

   en.wikipedia.org/wiki/The_Winston_Blue

   The Winston Blue is the name given to what was the largest flawless vivid blue diamond [1] [4] [5] bought by Harry Winston, Inc. (a wholly owned subsidiary of The Swatch Group from January 2013) on May 15, 2014, from an anonymous person for $23.8 million at Christie's Geneva Magnificent Jewels sale. The approximately $1.8003 million per carat ...

3. 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]

4. Diamond (gemstone) - Wikipedia

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

   The value of a diamond gemstone depends upon colour and quality, as well as weight. As of April 2024 the average price per carat of diamonds of between 1.00 and 1.49 carats was US$4,448. [48] The price of diamonds dropped significantly from a peak in 2022; prices of natural gems in shops dropped by 26% by the beginning of 2025.

5. ‘Internally flawless’ blue diamond could fetch $50 million at ...

   www.aol.com/internally-flawless-blue-diamond...

   Known as “Bleu Royal,” the 17.6-carat blue diamond is among the rarest ever to be unearthed, according to Christie’s auction house. ‘Internally flawless’ blue diamond could fetch $50 ...

6. Diamond color - Wikipedia

   en.wikipedia.org/wiki/Diamond_color

   Fancy-colored diamonds such as the deep-blue Hope Diamond are among the most valuable and sought-after diamonds in the world. In 2009, a 7-carat (1.4 g) blue diamond fetched the then highest price per carat ever paid for a diamond when it was sold at auction for 10.5 million Swiss francs (US$9.5 million at the time) which is in excess of US$1.3 ...

7. 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]