Alexandrite Twilight and Dawn or Neodymium glass

I am writing this to convey some quick, practical advice on recognizing and collecting crystal in the Alexandrite color. Being a glass nut, not a chemist, I am intentionally leaving out the difficult parts of the process. Neodymium is a rare earth binary compound, whatever that is, I have read it is mostly mined in China. When used in crystal production you get dichromatic or dichroic glass. That is glass that changes color in different lighting conditions. Alexandrite will be a pale ice blue under fluorescent lighting and a striking lavender under incandescent lights.
I am calling the color alexandrite as that is the name given the color by Moser, who invented it around 1930. But this can cause much confusion because that name was already in use. Thomas Webb, and Stevens and Williams in England were already

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Orignal From: Alexandrite Twilight and Dawn or Neodymium glass