Annagrun is a variety of uranium glass, first developed by Bohemian Joseph Riedel in 1835. Reidel separated uranium salts from pitchblende to isolate the colors, which were also reactive to ultra-violet light.
Naming the resulting products from his process of using uranium to color glass after his wife, Anna, Riedel dubbed the green variety "Annagrun" and the yellow as "Annagelb".
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Riedel's discovery added more colors to the growing palette emerging for glass in the Nineteenth Century. American glass manufacturers such as McKee and Boston & Sandwich were soon mass-producing the Annagelb glass that they named "Canary".
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