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Full-time professional mineral dealer with over 31 years experience in mineral collecting
And 15 years selling mineral specimens on the internet and at major mineral shows
Tray of fibrous Ulexite fragments which have been cut and polished perpendicular to the fibers. This shows the fiber-optic "TV stone" effect which transmit images through the fragments.
U.S. Borax Mine, Boron, Kramer District, Kern County, California, USA.
Picture size 10 cm.
© Dave Barthelmy
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