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2. Cullinan Diamond - Wikipedia

   en.wikipedia.org/wiki/Cullinan_Diamond

   Cullinan V. [edit] 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.

3. Golconda diamonds - Wikipedia

   en.wikipedia.org/wiki/Golconda_diamonds

   Golconda diamonds are mined in the Godavari-Krishna delta region of Andhra Pradesh, India. Golconda Fort in the western part of modern-day Hyderabad was a seat of the Golconda Sultanate and became an important centre for diamond enhancement, lapidary, and trading. Golconda diamonds are graded as Type IIa, are formed of pure carbon, are devoid ...

4. 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 ...

5. Gold-filled jewelry - Wikipedia

   en.wikipedia.org/wiki/Gold-filled_jewelry

   If the gold layer is 12 kt or higher, the minimum layer of karat gold in an item stamped gold-filled marks must equal at least 1 ⁄ 20th the total weight of the item. The most common stamps found on gold-filled jewelry are 1 ⁄ 20th 12kt GF and 1 ⁄ 20th 14kt GF. Also common is 1 ⁄ 10th 10kt. These standards are for modern gold-filled items.

6. Wittelsbach-Graff Diamond - Wikipedia

   en.wikipedia.org/wiki/Wittelsbach-Graff_Diamond

   US$ 80 million (June 2011) The Wittelsbach-Graff Diamond is a 31.06-carat (6.212 g) deep-blue diamond with internally flawless clarity, originating in the Kollur Mine, India. Laurence Graff purchased the Wittelsbach Diamond in 2008 for £ 16.4 million. In 2010, Graff revealed he had had the diamond cut by three diamond cutters to remove flaws.

7. Jewels of the Nizams of Hyderabad - Wikipedia

   en.wikipedia.org/wiki/Jewels_of_the_Nizams_of...

   The Jewels of the Nizams of Hyderabad State are among the largest and most expensive collection of jewels in present-day India. [1] The jewels belonged to the Nizams. After the annexation of their kingdom by Union of India, the Nizam and his heirs were barred by the Indian government from taking the collection, claiming that it was a national ...