Search results
Results from the WOW.Com Content Network
Aquamarine can mostly be found in granite pegmatites. [6] It can also be found in veins of metamorphic rocks that became mineralized by hydrothermal activity. [5] Dom Pedro aquamarine in the National Museum of Natural History, Washington, D.C. The largest known example is the Dom Pedro aquamarine found in Pedra Azul, Minas Gerais, Brazil, in ...
Aquamarine is found all over the world. Jarmon notes aquamarine deposits exist in Brazil, Pakistan, Afghanistan, Australia, Africa and the United States. Bloodstone Meaning and History
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.
The gem-gravel placer deposits of Sri Lanka contain aquamarine. Green-yellow beryl, such as that occurring in Brazil, is sometimes called chrysolite aquamarine. [18] 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
Citrine “A powerful gemstone crystal in a range of deep yellows, oranges, and yellow-cream-white, the citrine gemstone is said to bring abundance and wealth into one’s life,” Salzer says.
Therefore, mean depth figures are not available for many deep lakes in remote locations. [9] The average lake on Earth has the mean depth 41.8 meters (137.14 feet) [9] The Caspian Sea ranks much further down the list on mean depth, as it has a large continental shelf (significantly larger than the oceanic basin that contains its greatest depths).
A rarely seen deep sea fish resembling a serpent was found floating dead on the ocean surface off the San Diego coast and was brought ashore for study, marine experts said. The silvery, 12-foot ...
Deep sea mining is the extraction of minerals from the seabed of the deep sea. The main ores of commercial interest are polymetallic nodules , which are found at depths of 4–6 km (2.5–3.7 mi) primarily on the abyssal plain .