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Topaz is a silicate mineral made of aluminum and fluorine with the chemical formula Al 2 Si O 4 (F, OH) 2.It is used as a gemstone in jewelry and other adornments. Common topaz in its natural state is colorless, though trace element impurities can make it pale blue or golden brown to yellow-orange. [7]
Emerald of Saint Louis, [5] 51.60 carats cut; discovered in Austria, probably Habachtal, resides in the National Museum of Natural History, Paris Gachalá Emerald [ 6 ] Mogul Mughal Emerald , 217.80 carats cut; mined in Colombia and cut in the Mughal empire in Hijri year 1107 (1695–1696), resides in the Museum of Islamic Art, Doha , Qatar [ 7 ...
The DeLong Star Ruby - a 100-carat stone discovered in Burma in the 1930s. The Patricia Emerald - a 12-sided 632-carat emerald found in Colombia in 1920, unique because it was never cut into a gem shape. [2] The Brazilian Princess Topaz - a light blue gemstone weighing 9.5 pounds, considered to be the largest cut gemstone in the world. [15]
Gemstones of the World revised 5th edition, 2013 by Walter Schumann ISBN 978-1454909538 Smithsonian Handbook: Gemstones by Cally Hall, 2nd ed. 2002 ISBN 978-0789489852 hide
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.
The American Golden Topaz, housed in the National Museum of Natural History, Washington D.C.. The American Golden Topaz, a 172-faceted topaz weighing 22,892.5 carats (4.57850 kg; 10.0939 lb), is the largest cut yellow topaz in the world, and one of the largest faceted gems of any type in the world. [1]
Lucy’s discovery transformed our understanding of human origins. Don Johanson, who unearthed the Australopithecus afarensis remains in 1974, recalls the moment he found the iconic fossil.
The world’s oldest wine has been discovered at a Roman burial site in Spain, and one thing is clear — it definitely had body.. For roughly 2,000 years, the wine has been held in a glass ...