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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.
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 of gem-quality stones. [12] In 2019 Kagem emerald mine produced 42.4 million carats of emeralds. [13] The Zambian emerald sector is an important contributor of tax revenue to the Government.
^ Florida's state gem, moonstone, was adopted to highlight Florida's role in the United States' Lunar program, which landed the first astronauts on the Moon. [81] ^ Since 1983, Massachusetts has had 3 other official state rocks: State Historical Rock (Plymouth Rock), State Explorer Rock (Dighton Rock), and State Building and Monument Stone . In ...
Hiddenite Gem Mines. Coordinates: 35.9137°N 81.0830°W. Hiddenite, North Carolina, United States, is a centre for the mining of gemstones. Three larger mines found there are Adams Mine, NAEM and the Emerald Hollow Mine. They are collectively known as the Hiddenite Gem Mines .
Emeralds, Muzo Mine, Vasquez-Yacopí Mining District, Colombia. Emeralds are green and sometime green with a blueish-tint precious gemstones that are mined in various geological settings. They are minerals in the beryl group of silicates. For more than 4,000 years, emeralds have been among the most valuable of all jewels.
The Bahia Emerald is one of the largest emeralds and contains the largest single shard ever found. The stone, weighing approximately 752 lb (341 kg) [ 1] (approximately 1,700,000 carats) originated from Bahia, Brazil, by Ken Conetto and its emerald crystals embedded in host rock. It narrowly escaped flooding during Hurricane Katrina in 2005 ...
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