Last Updated: Nov 22, 2016     Views: 458

From Dr. Robert Brill, Research Scientist Emeritus:

A weak-moderate yellowish-green fluorescence (under either short-wave or long-wave UV) usually indicates the presence of additive manganese as a decolorizer.  It is a common response by non-lead glasses of all types of many periods.  I do not recall ever seeing a green fluorescence response to any lead glasses.  The fluorescence of any other elements would normally be masked by the strong ice-blue fluorescence of the lead.