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The physical properties of emerald are essentially the same as those of beryl. Its refractive and dispersive powers are not high, so that cut stones display little brilliancy or fire.
Emerald is the bluish green to green variety of beryl, a mineral species that includes aquamarine. Gem experts differ on the degree of green that makes one stone an emerald and another stone a less-expensive green beryl.
Emeralds are gem-quality specimens of the beryl mineral family with a rich, distinctly green color. They are found in igneous, metamorphic, and sedimentary rocks in a small number of locations worldwide. For over 5000 years, emeralds have been one of the most desirable and valuable colored stones.
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Everything you ever wanted to know about emerald. Find value guidelines, scientific data, expert comments, and more in our Gemstone Encyclopedia.
Emeralds are gemstones formed from the mineral beryl. To be called an emerald, a beryl gem must be primarily green, and possess a certain intensity of color. Here are the different types of emeralds you're most likely to encounter.
Main emerald producing countries 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. It occurs ...
