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  2. Nassak Diamond - Wikipedia

    en.wikipedia.org/wiki/Nassak_Diamond

    Owner. Edward J. Hand. Estimated value. $3.92 million (inflation adjusted 1970 value) The Nassak Diamond (also known as the Nassac Diamond[ 2] and the Eye of the Idol[ 3]) is a large, 43.38 carats (8.676 g) Golconda Diamond that originated as a larger 89-carat diamond in the 15th century in India. [ 4]

  3. List of U.S. state minerals, rocks, stones and gemstones

    en.wikipedia.org/wiki/List_of_U.S._state...

    ^ Florida's state gem, moonstone, was adopted to highlight Florida's role in the United States' Lunar program, which landed the first astronauts on the Moon. [81] ^ Since 1983, Massachusetts has had 3 other official state rocks: State Historical Rock (Plymouth Rock), State Explorer Rock (Dighton Rock), and State Building and Monument Stone . In ...

  4. Diamond (gemstone) - Wikipedia

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

    Diamond[ a] is a gemstone formed by cutting a raw diamond. Diamonds are one of the best-known and most sought-after gems, and they have been used as decorative items since ancient times. The hardness of diamond and its high dispersion of light —giving the diamond its characteristic "fire"—make it useful for industrial applications and ...

  5. Golconda diamonds - Wikipedia

    en.wikipedia.org/wiki/Golconda_diamonds

    The Golconda diamondiferous region is located in the Southern Indian peninsular shield, [2] which was formed during the process of proterozoic and Insular India. [3] The region is spread over 50,000 km 2 (19,000 sq mi), within the sediments of the Krishna-Pennar river basin and Deccan Traps, [2] and contains 120 out of the 150 kimberlite pipes in India. [4]

  6. Top jewelry pieces fall short of target prices at ... - AOL

    www.aol.com/entertainment/top-jewelry-pieces...

    Christie's said all the jewelry was purchased over more than 50 years, starting in the early 1970s, more than a quarter-century after the Nazis were driven from power at the end of World War II.

  7. Gemstone - Wikipedia

    en.wikipedia.org/wiki/Gemstone

    Gemstone. Group of precious and semiprecious stones—both uncut and faceted—including ( clockwise from top left) diamond, uncut synthetic sapphire, ruby, uncut emerald, and amethyst crystal cluster. A gemstone (also called a fine gem, jewel, precious stone, semiprecious stone, or simply gem) is a piece of mineral crystal which, when cut or ...

  8. List of missing treasures - Wikipedia

    en.wikipedia.org/wiki/List_of_missing_treasures

    One of the eight treasures of the Sasanian king Khosrow II. Heirloom Seal of the Realm. Confirmed. circa 960. —. Imperial Seal of China created by Emperor Qin Shi Huang, lost after the Five Dynasties and Ten Kingdoms period in the 10th century. Egill Skallagrímsson 's silver. Legend. circa 990-995.

  9. Gemological Institute of America - Wikipedia

    en.wikipedia.org/wiki/Gemological_Institute_of...

    The Gemological Institute of America ( GIA) is a nonprofit institute based in Carlsbad, California. It is dedicated to research and education in the field of gemology and the jewelry arts. [ 1] Founded in 1931, GIA's mission is to protect buyers and sellers of gemstones by setting and maintaining the standards used to evaluate gemstone quality.

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