<http://schema.org/description>
"Pre-1915 naturally sun purple fluted glass vase. Glass made with manganese was found to turn a very light lavender if placed in a sunny window or otherwise exposed over time to (ultraviolet) rays of the sun. Production of glass containing manganese was stopped in 1915."^^<http://www.w3.org/2001/XMLSchema#string>
<https://www.onekingslane.com/p/1419846-antique-sun-purple-fluted-vase?ds=459>