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November 12th, 2020

11/12/2020

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In the 1980s, an aquamarine crystal three feet long weighing nearly 100 pounds was discovered in the state of Minas Gerais in Brazil. Unfortunately, the crystal was dropped and broken into three pieces. The mine owner sold two of the pieces to be cut up into gems for jewelry. The largest piece (Image 3) - named the Dom Pedro after the two emperors of Brazil (Dom Pedro I and his son, Dom Pedro II, who ruled during the 19th century) - was acquired by German gem artist Bernd Munsteiner. Munsteiner decided to carve a sculpture from the massive crystal rather than cutting it into gems, even though the latter would've generated more profit. Using an art he pioneered, he crafted a fantasy cut obelisk weighing more than 10,000 carats. The sculpture was described by Smithsonian Magazine as being "shot through with radiant starbursts of astonishing intricacy and precision." The Dom Pedro aquamarine, the largest known single piece of cut gem quality aquamarine in the world, was donated to the Smithsonian by Jane Mitchell and her husband Jeffrey Bland. It is housed in its own display case just 30 feet from the Hope Diamond.
(Image 1) Courtesy: BRENDAN SMIALOWSKI/AFP via Getty Images
(Image 2) Courtesy: Donald E. Hurlbert, Smithsonian Institution
(Image 3) Courtesy: Tom Munsteiner
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November 12th, 2020

11/12/2020

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​Why are green diamonds green? It’s not an easy question to answer due to their incredible rarity. But after examining over 50,000 naturally colored greenish diamonds, including more than 9,000 pure green diamonds in the lab in the past decade, GIA scientists have confirmed that many of them got their color from exposure to radioactive minerals and fluids in the earth’s crust. Over thousands to millions of years, radiation produced by the decay of isotopes of elements such as uranium and thorium (present in minerals or dissolved in geological fluids) changed the diamond's structure by displacing carbon atoms to create vacant atomic positions. These vacancies caused the diamond to absorb the red part of the light, while nitrogen-related defects often found in natural diamonds absorb the blue part of light; this combination allows primarily green light to be seen. This particular beauty is the 5.03 carat Aurora Green diamond. Graded Fancy Vivid Green by GIA, it is one of the most famous green diamonds in the world and is currently owned by Chow Tai Fook. Courtesy of Chow Tai Fook Jewellery Group
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Beautiful Vivid Blue Fancy cut Diamond  WOW

11/12/2020

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Roses are red, violets are blue...But even better is this pink and blue diamond flower-motif ring by Moussaieff! In the center is a 3.24 carat Internally Flawless, Fancy Vivid blue square emerald-cut diamond surrounded by seven oval diamonds that range from Fancy Vivid pink, Fancy Vivid purplish pink, Fancy Intense pink to Fancy Deep pink. Learn more about how GIA grades fancy color diamonds Courtesy: Christie's
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    Mary has a love for diamonds and is a GIA Graduate

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