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  2. Sapphire - Wikipedia

    en.wikipedia.org/wiki/Sapphire

    In October 2014, Sotheby's Hong Kong achieved consecutive per-carat price records for Kashmir sapphires – first with the 12.00 carat Cartier sapphire ring at US$193,975 per carat, then with a 17.16 carat sapphire at US$236,404, and again in June 2015 when the per-carat auction record was set at US$240,205. [39]

  3. Prices of chemical elements - Wikipedia

    en.wikipedia.org/wiki/Prices_of_chemical_elements

    Listed here are mainly average market prices for bulk trade of commodities. Data on elements' abundance in Earth's crust is added for comparison. As of 2020, the most expensive non-synthetic element by both mass and volume is rhodium. It is followed by caesium, iridium and palladium by mass and iridium, gold and platinum by volume.

  4. How Much Is a Diamond Worth? How To Find the Value of Your ...

    www.aol.com/finance/much-diamond-worth-value...

    The weight of a diamond is one of these variables that determines a diamond’s worth and is what the general public is most familiar with. The unit of measurement, called the carat, equals 200 ...

  5. Cartier (jeweler) - Wikipedia

    en.wikipedia.org/wiki/Cartier_(jeweler)

    [18] [19] [20] During that time, Louis Cartier also pioneered the use of platinum in jewelry, a breakthrough innovation that enabled more intricate and delicate settings. The strength of platinum allowed for nearly invisible settings, putting the spotlight on diamonds and gemstones, and giving Cartier's creations a distinct elegance that ...

  6. Queen Marie of Romania Sapphire - Wikipedia

    en.wikipedia.org/.../Queen_Marie_of_Romania_Sapphire

    Queen Marie wearing the sapphire as a pendant at her coronation, 15 October 1922. Cartier first mentioned this 478.68 carat (95.736 g) Cornflower blue Ceylon sapphire in 1913 when it was used with seven other sapphires to make a diamond and sapphire sautoir. The design was later altered to be all diamond, save this gemstone, to make it stand out.

  7. 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]