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  2. Tanzanite - Wikipedia

    en.wikipedia.org/wiki/Tanzanite

    Tanzanite is the blue and violet variety of the mineral zoisite (a calcium aluminium hydroxyl sorosilicate), caused by small amounts of vanadium. [3] Tanzanite belongs to the epidote mineral group. Tanzanite is only found in Simanjiro District of Manyara Region in Tanzania , in a very small mining area approximately 7 km (4.3 mi) long and 2 km ...

  3. Victorian jewellery - Wikipedia

    en.wikipedia.org/wiki/Victorian_jewellery

    Victorian jewellery originated in England; it was produced during the Victoria era, when Queen Victoria reigned from 1837 to 1901. Queen Victoria was an influential figure who established the different trends in Victorian jewellery. [1] The amount of jewellery acquired throughout the era established a person's identity and status.

  4. 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 ...

  5. Chequers Ring - Wikipedia

    en.wikipedia.org/wiki/Chequers_Ring

    Chequers Ring, three-quarter profile The Chequers Ring is one of the few surviving pieces of jewellery worn by Queen Elizabeth I of England. The mother-of-pearl ring, set with gold and rubies, includes a locket with two portraits, one depicting Elizabeth and the other traditionally identified as Elizabeth's mother Anne Boleyn, but possibly her step-mother Catherine Parr.

  6. Zoisite - Wikipedia

    en.wikipedia.org/wiki/Zoisite

    Zoisite, first known as saualpite, after its type locality, is a calcium aluminum hydroxy sorosilicate belonging to the epidote group of minerals. Its chemical formula is Ca 2 Al 3 (Si O 4) (Si 2 O 7)O (O H). Zoisite occurs as prismatic, orthorhombic (2/m 2/m 2/m) crystals or in massive form, being found in metamorphic and pegmatitic rock.

  7. Dieges & Clust - Wikipedia

    en.wikipedia.org/wiki/Dieges_&_Clust

    A 1936 New York Yankees World Series ring cast by Dieges & Clust and owned by Lou Gehrig held the record sale price for such a ring at $17,500. [ 10 ] In 1999, Sotheby's sold what was believed to be Lou Gehrig's 1927 ring for $96,000.

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