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  2. Jewels of Diana, Princess of Wales - Wikipedia

    en.wikipedia.org/wiki/Jewels_of_Diana,_Princess...

    A replica of Lady Diana Spencer's engagement ring. Diana and Charles became engaged in February 1981. Her engagement ring consisted of 14 diamonds surrounding a 12-carat oval blue Ceylon sapphire set in 18-karat white gold. [54] [55] It was created by then-crown jeweller Garrard. The design was inspired by Queen Victoria's sapphire-and-diamond ...

  3. Engagement ring - Wikipedia

    en.wikipedia.org/wiki/Engagement_ring

    The most common setting for engagement rings is the solitaire prong setting, which was popularized by Tiffany & Co. in 1886 and its six-claw prong setting design sold under the "Tiffany setting" trademark. The modern favorite cut for an engagement ring is the brilliant cut, which provides the maximum amount of sparkle to the gemstone. [46]

  4. Emerald - Wikipedia

    en.wikipedia.org/wiki/Emerald

    Emerald is a gemstone and a variety of the mineral beryl (Be 3 Al 2 (SiO 3) 6) colored green by trace amounts of chromium or sometimes vanadium. [2] Beryl has a hardness of 7.5–8 on the Mohs scale. [2] Most emeralds have many inclusions, [3] so their toughness (resistance to breakage) is classified as generally poor.

  5. Jewels of Elizabeth II - Wikipedia

    en.wikipedia.org/wiki/Jewels_of_Elizabeth_II

    The exact origin of the suite, which consists of an emerald necklace and emerald earrings, is unknown. [73] The necklace features square-cut emeralds set in diamond clusters, and the earrings consist of pear-shaped cabochon emeralds suspended from diamond studs. The suite was frequently worn by the Queen Mother and later passed on to the Queen ...

  6. Colombian emeralds - Wikipedia

    en.wikipedia.org/wiki/Colombian_emeralds

    Colombia, located in northern South America, is the country that mines and produces the most emeralds for the global market, as well as the most desirable. It is estimated that Colombia accounts for 70–90% of the world's emerald market. [1] While commercial grade emeralds are quite plentiful, fine and extra fine quality emeralds are extremely ...

  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 ...