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Aquamarine is a pale-blue to light-green variety of the beryl family, [2] with its name relating to water and sea. [3] The color of aquamarine can be changed by heat, with a goal to enhance its physical appearance (though this practice is frowned upon by collectors and jewelers). [ 4 ]
The pale blue color of aquamarine is attributed to Fe 2+. Fe 3+ ions produce golden-yellow color, and when both Fe 2+ and Fe 3+ are present, the color is a darker blue as in maxixe. [ 22 ] [ 23 ] Decoloration of maxixe by light or heat thus may be due to the charge transfer between Fe 3+ and Fe 2+ .
Aquamarine is often heated to remove yellow tones, or to change green colors into the more desirable blue, or enhance its existing blue color to a deeper blue. [ 42 ] Nearly all tanzanite is heated at low temperatures to remove brown undertones and give a more desirable blue / purple color. [ 44 ]
Women may get more health benefits from regular exercise than men—even if they work out less. Lindsey Leake. February 19, 2024 at 11:00 AM.
The Dom Pedro aquamarine is the world's largest cut aquamarine gem. It was cut from a crystal originally weighing approximately 60 pounds (27 kg) and measuring almost 2 feet (0.61 m) in length. The stone was mined in Pedra Azul, in the state of Minas Gerais in Brazil around 1980, and named after the Brazilian emperors Pedro I and Pedro II.
Men also needed more exercise than women to achieve the same health benefits: Five hours of moderate or vigorous exercise per week reduced their risk of dying by 18% compared with men who didn’t ...
Aquamarine may also refer to: Arts and entertainment. Aquamarine, by Alice Hoffman, 2001 Aquamarine, by Elizabeth Allen, 2006; Aquamarine, by ...
Benefits of fenugreek for women. While further research is warranted to know the overall effectiveness of fenugreek, according to King, preliminary research shows its potential. That said, the ...