Vaseline Glass
Vaseline Glass or Uranium Glass is glass which has had uranium, usually in oxide diuranate or depleted uranium form, added to a glass mix prior to melting. The proportion usually varies from trace levels to about 2% by weight uranium, although some 19th-century pieces were made with up to 25% uranium.
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When this type of glass is illuminated with an ultraviolet light, the uranyl ion in the glass fluoresces a beautiful green color.
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I am honored to have one piece from my collection posted on a very nice German website:
-------------------------------- http://www.feingut.de/2009/04/26/strahlendes-geschirr-dank-uranglas/
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