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2. 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.

3. Diamond (gemstone) - Wikipedia

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

   Neither of these changes makes the diamond appear any larger, and both greatly reduce the sparkle of the diamond. (A poorly cut 1.0-carat (200 mg) diamond may have the same diameter and appear as large as a 0.85-carat (170 mg) diamond.) The depth percentage is the overall quickest indication of the quality of the cut of a round brilliant ...

4. Grain (unit) - Wikipedia

   en.wikipedia.org/wiki/Grain_(unit)

   The standard was an avoirdupois pound, the grain being defined as ⁠ 1 / 7000 ⁠ of it. [30] The division of the carat into four grains survives in both senses well into the early twentieth century. For pearls and diamonds, weight is quoted in carats, divided into four grains.

5. Cullinan Diamond - Wikipedia

   en.wikipedia.org/wiki/Cullinan_Diamond

   Cullinan V is an 18.8-carat (3.76 g) heart-shaped diamond set in the centre of a platinum brooch that formed a part of the stomacher made for Queen Mary to wear at the Delhi Durbar in 1911. The brooch was designed to show off Cullinan V and is pavé-set with a border of smaller diamonds.

6. Lesedi La Rona - Wikipedia

   en.wikipedia.org/wiki/Lesedi_La_Rona

   On 9 February 2016, Lucara Diamond announced that the stone had been named Lesedi La Rona which means "Our Light" in the Tswana language. The winner of the competition who named the diamond was Thembani Moitlhobogi from Mmadikola. [15] [16] [17] He stated that his reason for the name was that "the diamond is a pride, light and hope of Botswana ...

7. Lucara Diamond - Wikipedia

   en.wikipedia.org/wiki/Lucara_Diamond

   The diamond weighs 1,111 carat and measures 65 by 56 by 40 mm (2.6 by 2.2 by 1.6 in). A day later, two more diamonds weighing 813 and 374 carat, were also found. [15] All the stones came from the AK6 pipe opened 18 months earlier, it has since yielded over 1 million carats of diamonds. [16] The company has sold the 813 carat Constellation in ...