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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.
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 ...
Emerald Mound was constructed during 1250 and 1600 CE, and is the type site for the Emerald Phase (1500 - 1680) of the Plaquemine culture Natchez Bluffs chronology.It was used as a ceremonial center for a population who resided in outlying villages and hamlets, but takes its name from the historic Emerald Plantation that surrounded the mound in the 19th century.
Jade. “Long prized across many varied and ancient cultures from ancient China to the Incan and Aztec empires, Jade is a highly valuable gemstone that represents good fortune, luck, and abundance ...
The emerald ash borer (Agrilus planipennis), also known by the acronym EAB, is a green buprestid or jewel beetle native to north-eastern Asia that feeds on ash species (Fraxinus spp.). Females lay eggs in bark crevices on ash trees, and larvae feed underneath the bark of ash trees to emerge as adults in one to two years.
July 15, 2024 at 10:04 AM. All About the Emeralds at the Ambani WeddingCourtesy Abu Jani Sandeep Khosla x Jayasri Burman. The bride wore emeralds. So did the groom (buttons, brooch, necklace). So ...
Red beryl, formerly known as bixbite and marketed as red emerald or scarlet emerald, is an extremely rare variety of beryl as well as one of the rarest minerals on Earth. [1][2]: 19 The gem gets its red color from manganese ions embedded inside of beryllium aluminium cyclosilicate crystals. [1] The color of red beryl is stable up to 1,000 °C ...
The brilliant emerald, Somatochlora metallica, is a middle-sized species of dragonfly. It is the largest and greenest of the Somatochlora species; 50–55 millimetres (2.0–2.2 in) long. [ 4] S. metallica is found across most of northern Eurasia where it is the commonest of its genus. [ 4] In Great Britain, it is locally common in south east ...
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