American Golden Topaz

American Golden Topaz

The American Golden Topaz, a 172-faceted topaz weighing 22,892.5 carats (4.5785 kg), is the largest cut yellow topaz in the world, and one of the largest faceted gems of any type in the world. Originating from Minas Gerais, Brazil, it was cut by Leon Agee over a period of two years from an 11.8 kg (26 lb avdp) stream-rounded cobble. It was purchased by Rockhound Hobbyists of America and presented to the Smithsonian Institution in 1988 and is displayed in the National Museum of Natural History in Washington, D.C..

External links

* [http://famousdiamonds.tripod.com/americangoldentopaz3.jpgAmerican Golden Topaz]
* [http://www.mnh2.si.edu/exhibits/ggm/exhibits/dynamicearth/6_0_0_GeoGallery/geogallery_specimen.cfm?SpecimenID=4024&categoryID=1&categoryName=Gems&browseType=name Large topaz crystals] , National Museum of Natural History


Wikimedia Foundation. 2010.

Игры ⚽ Поможем написать реферат

Look at other dictionaries:

  • American Museum of Natural History — Established 1869 Location Central Park West at 79th Street, New York City, United States Type …   Wikipedia

  • Japanese American internment — refers to the forcible relocation and internment of approximately 110,000 Japanese nationals and Japanese Americans to housing facilities called War Relocation Camps , in the wake of Imperial Japan s attack on Pearl Harbor. [… …   Wikipedia

  • North American Solar Challenge — The American Solar Challenge (ASC), previously known as Sunrayce, the American Solar Challenge, and the North American Solar Challenge, is a solar car race across the United States and Canada. In the race, teams from colleges and universities… …   Wikipedia

  • List of gemstones — A number of gemstones have gained fame, either because of their size and beauty or because of the people who owned or wore them.A list of famous gemstones follows Aquamarines*The Giant Aquamarine Diamonds : See List of famous diamonds… …   Wikipedia

  • List of birds of Venezuela — This is a list of the bird species recorded in Venezuela. The avifauna of Venezuela includes a total of 1417 species, of which 48 are endemic, 6 have been introduced by humans, and 34 are rare or accidental. 27 species are globally… …   Wikipedia

  • List of birds of Brazil — Brazil has one of the richest bird diversities in the world, with more than 1700 species of birds, about 57% of the bird species recorded for all of South America. These numbers are still increasing, almost every year, due to new occurrences or… …   Wikipedia

  • List of casinos — A list of casinos.Antigua and Barbuda*St. James s Club Antigua in Mamora Bay *Casino Riviera in Runaway Bay *Grand Princess Casino in St. John s *King s Casino in St. John sAustraliaNew South Wales*Star City Casino (Sydney)Victoria*Crown Casino… …   Wikipedia

  • List of birds of Colombia — This is a list of the bird species recorded in Colombia. The avifauna of Colombia includes a total of 1895 species, of which 74 are endemic, 2 have been introduced by humans, and 87 are rare or accidental. 1 species listed is extirpated in… …   Wikipedia

  • List of birds of Ecuador — This is a list of the bird species recorded in Ecuador. The avifauna of Ecuador includes a total of 1663 species, of which 16 are endemic, 2 have been introduced by humans, and 19 are rare or accidental. 77 species are globally threatened.This… …   Wikipedia

  • List of birds of Guyana — This is a list of the bird species recorded in Guyana. The avifauna of Guyana includes a total of 796 species, of which 1 is endemic and 94 are rare or accidental. 3 species listed are extirpated in Guyana and are not included in the species… …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”