Gibbsite

Unknown Owner

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Spheres, to 6 mm across, of lustrous and slightly translucent, rich, sky blue gibbsite, an uncommon aluminum hydroxide, almost totally cover a sliver of matrix. This new find is possibly the world's best of species for intensity in coloration. Very pretty material! Very lightweight. One of the better quality pieces I saw for sale in a whole table of the material laid out at the Shanghai show in April 2012.