Tiffany Stone is a rare stone occurring in only one location in the world: the site of the Brush-Wellman beryllium mine. It's mixture of opalized fluorite, calcite, dolomite, quartz, chalcedony, bertrandite, beryllium,
Bertrandite from Brush Wellman Mine, Spor Mountain Mining District, Thomas Range, Juab County, Utah, USA
BIG Cylinder Block Ultra Pure Beryllium Brush Wellman engraved Collector's item | eBay
Materion Corporation History
Brush Wellman to lay off dozens of workers | WNWO
Brush Wellman -- Design Guide Table of Contents - Matthey.ch
BIG Cylinder Block Ultra Pure Beryllium Brush Wellman engraved Collector's item | eBay