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<p>[QUOTE="say_it_slowly, post: 5724, member: 50"]If you put your gem tester on another thick hunk of what you know to be glass does it have a similar reading? As I recall glass this color gets it's color from the impurities in it such as iron so any chance it might be caused by impurities. (I have no idea) Does it have little bubbles like some glass?</p><p><br /></p><p>Not knowing anything about tourmaline/iolite I did a quick Google and really some rough stones being sold as that are not dissimilar to yours.</p><p><br /></p><p>As a kid we visited lots of the WV glass factories and even a marble factory. We also dragged home some large chunks of glass, some a single color, some mixed. They all were a lot sharper than this piece which looks like it could be water worn.[/QUOTE]</p><p><br /></p>
[QUOTE="say_it_slowly, post: 5724, member: 50"]If you put your gem tester on another thick hunk of what you know to be glass does it have a similar reading? As I recall glass this color gets it's color from the impurities in it such as iron so any chance it might be caused by impurities. (I have no idea) Does it have little bubbles like some glass? Not knowing anything about tourmaline/iolite I did a quick Google and really some rough stones being sold as that are not dissimilar to yours. As a kid we visited lots of the WV glass factories and even a marble factory. We also dragged home some large chunks of glass, some a single color, some mixed. They all were a lot sharper than this piece which looks like it could be water worn.[/QUOTE]
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