Well an interesting surprise at the Gemstone Identification presentation at the Southwest Gem and Mineral Society meeting in San Antonio last night
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color-change Tourmaline !
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By no means is it as dramitic as the color change in Alexandrite when you go from daylight to artificial light with a 80% or better chnaging stone
but definitely better than what is seen in Garnet.
All of these color-change stones, and others can be located through various dealers on the internet, but probably not at your local jewelry store unless they specialize in colored gemstones, and then maybe not even these.
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