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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. Emerald is a cyclosilicate.

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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 …

Emerald is the bluish green to green variety of beryl, a mineral species that includes aquamarine. Highly saturated green color defines high quality emerald. Emerald cuts have concentric parallel rows of facets and beveled corners. Eye visible inclusions create an internal scene referred to as “jardin,” or garden.

2022年11月1日 · Emerald has been synonymous with the color green since ancient times. A fine emerald is a truly breathtaking sight, and this member of the beryl family deserves its placement among the traditional “Big Four” gems along with diamond, ruby, and sapphire.

Today, emeralds are a symbol of loyalty, new beginnings, peace, and security, making it not only a beautiful gem to wear, but also a meaningful jewelry present to give a loved one, especially one with a May birthday. It is still widely prized by the rich and famous.

2024年5月20日 · Emeralds are transparent gems formed from the mineral beryl, made green by trace elements of chromium, vanadium, and/or iron. Emerald is the birthstone for May, the most famous green gemstone, and one of the four precious stones …

2019年11月17日 · Emerald is one of the four recognized precious gemstones. The others are ruby, sapphire, and diamond. Emerald is the birthstone of May and is the traditional gift for the 20th, 35th and 55th wedding anniversary in the US. Emerald is made from beryl just like the gemstone aquamarine.

Emerald, grass-green variety of beryl (q.v.) that is highly valued as a gemstone. The name comes indirectly from the Greek smaragdos, a name that seems to have been given to a number of stones having little in common except a green colour; Pliny’s smaragdus undoubtedly included several distinct.