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The '''Chalk Emerald''' is a 37.82 [[Carat (mass)|carat]] (7.564 g) [[Colombia]]n [[emerald]].   
The '''Chalk Emerald''' is a {{convert|37.82|carat|g}} [[Colombia]]n [[emerald]].   


It originally weighed 38.40 carats (7.68 g), but was recut and set in a ring, where it is surrounded by sixty pear-shaped diamonds (totalling 15 carats (3 g)), by [[Harry Winston]] Inc. The ring is housed in the National Gem and Mineral Collection at the [[Smithsonian Institution|Smithsonian]] [[National Museum of Natural History|Natural History Museum]] and was donated to the museum by Mr. and Mrs. [[O. Roy Chalk]] in 1972.  
It originally weighed {{convert|38.40|carat|g}}, but was recut and set in a ring, where it is surrounded by sixty pear-shaped diamonds (totalling {{convert|15|carat|g}}, by [[Harry Winston]] Inc. The ring is housed in the National Gem and Mineral Collection at the [[Smithsonian Institution|Smithsonian]] [[National Museum of Natural History|Natural History Museum]] in the [[United States]] and was donated to the museum by Mr. and Mrs. [[O. Roy Chalk]] in 1972.  


==External links==
==External links==


* http://www.internetstones.com/claire-roy-chalk-emerald-ring.html
* http://famousdiamonds.tripod.com/chalkemeraldring.html
* http://famousdiamonds.tripod.com/chalkemeraldring.html
* http://www.ks.uiuc.edu/~tskirvin/pics/trips/DC-2006/NaturalHistory-2006.02.20/tn/img_2330.jpg.html
* http://www.ks.uiuc.edu/~tskirvin/pics/trips/DC-2006/NaturalHistory-2006.02.20/tn/img_2330.jpg.html


[[Category:Named gemstones]]
[[Category:Named emeralds]]

Latest revision as of 08:20, 12 June 2009

The Chalk Emerald is a Template:Convert/carat Colombian emerald.

It originally weighed Template:Convert/carat, but was recut and set in a ring, where it is surrounded by sixty pear-shaped diamonds (totalling Template:Convert/carat, by Harry Winston Inc. The ring is housed in the National Gem and Mineral Collection at the Smithsonian Natural History Museum in the United States and was donated to the museum by Mr. and Mrs. O. Roy Chalk in 1972.