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  2. Colombian emeralds - Wikipedia

    en.wikipedia.org/wiki/Colombian_emeralds

    The source of these trace elements in the case of Colombian Emeralds is believed to be from interaction of the parent hydrothermal fluid and the black shale host rock. [citation needed] Colombian emeralds are much sought after, and not just because of their superb quality and color. A gem's value depends upon its size, purity, color and brilliance.

  3. Mineral industry of Colombia - Wikipedia

    en.wikipedia.org/wiki/Mineral_industry_of_Colombia

    Colombia is the main producer of finer quality emeralds worldwide. Colombia produced 2.7 Mcarats (540 kg) of emeralds during 2008. [15] Emerald mines are located both in the Boyacá and Cundinamarca Departments. Colombian emeralds constitute 50-95% of the world production, the numbers depending on the year, source and emeralds grade. [25] [26] [27]

  4. List of emeralds by size - Wikipedia

    en.wikipedia.org/wiki/List_of_emeralds_by_size

    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 and sometimes vanadium. [1] Beryl has a hardness of 7.5–8 on the Mohs scale. [1] Most emeralds are highly included, [2] so their toughness (resistance to breakage) is classified as generally poor. Emerald is a cyclosilicate.

  5. 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

  6. Trapiche emerald - Wikipedia

    en.wikipedia.org/wiki/Trapiche_emerald

    A trapiche emerald A Colombian trapiche emerald, diamond, platinum and 18K yellow gold ring. Trapiche emerald is a rare variety of the gemstone emerald, characterized by a six-arm radial pattern of usually black spokes separating areas of green emerald. If weathered, the black spokes may become light in color. Trapiche emerald is one of an ...

  7. Gachalá Emerald - Wikipedia

    en.wikipedia.org/wiki/Gachalá_Emerald

    The Gachalá Emerald, one of the most valuable and famous emeralds in the world, was found in 1967, in the mine called Vega de San Juan, located in Gachala, a town in Colombia, located 142 km (88 mi) from Bogota.

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