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2. 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. Emerald is a cyclosilicate.

3. List of emeralds by size - Wikipedia

   en.wikipedia.org/wiki/List_of_emeralds_by_size

   The three main emerald mining areas in Colombia are Muzo, Coscuez, and Chivor. [10] Rare "trapiche" emeralds are found in Colombia, distinguished by ray-like spokes of dark impurities. Zambia is the world's second biggest producer, with Kagem mine being the world's largest emerald mine [ 11 ] responsible for 25–30% of the world's production ...

4. List of individual gemstones - Wikipedia

   en.wikipedia.org/wiki/List_of_individual_gemstones

   Emerald of Saint Louis, [5] 51.60 carats cut; discovered in Austria, probably Habachtal, resides in the National Museum of Natural History, Paris Gachalá Emerald [ 6 ] Mogul Mughal Emerald , 217.80 carats cut; mined in Colombia and cut in the Mughal empire in Hijri year 1107 (1695–1696), resides in the Museum of Islamic Art, Doha , Qatar [ 7 ...

5. 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. Gachalá Chibcha means "place of Gacha."

6. Judge rules US must return ‘cursed’ $1B emerald to Brazil ...

   www.aol.com/judge-rules-us-must-return-205130212...

   An 836-pound “cursed” emerald worth nearly $1 billion will be returned to Brazil after 15 years under lock and key in Los Angeles. The 180,000-carat Bahia Emerald was smuggled out of the South ...

7. Gemstone - Wikipedia

   en.wikipedia.org/wiki/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 ...