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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] It is the birth stone of March. [5]
The deep blue version of aquamarine is called maxixe [19] (pronounced mah-she-she). [20] Its color results from a radiation-induced color center. [21] Faceted aquamarine. 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 ...
The crystal structure contains distorted tetrahedral (WO 4) and octahedral ((Fe, Mn)O 6) units. The wolframite family represents complete solid solution between Fe 2+ and Mn 2+. [5] In ferberite, the percentage of WO 3 is around 76.3% whereas in hübnerite it is around 76.6%. In naturally occurring minerals the percent range falls within 20-80 ...
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.
Mineralogy is a subject of geology specializing in the scientific study of the chemistry, crystal structure, and physical (including optical) properties of minerals and mineralized artifacts. Specific studies within mineralogy include the processes of mineral origin and formation, classification of minerals, their geographical distribution, as ...
KFC is expanding its fried chicken empire.. On Monday, Dec. 23, the fast food chain opened Saucy, a new concept store in Orlando. Unlike KFC restaurants, which sell everything from fried chicken ...
Peridot (/ ˈ p ɛ r ɪ ˌ d ɒ t,-ˌ d oʊ / PERR-ih-dot, -doh), sometimes called chrysolite, is a yellow-green transparent variety of olivine.Peridot is one of the few gemstones that occur in only one color.
Currently there are 3.6 million cases pending before immigration judges, the largest number of such cases in the history of the American immigration system. That is a 44% increase from the 2.5 ...