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Bertrandite or Tiffany Stone
is composed of many minerals,
that vary from sample to sample. It is rare, because it comes from an
area in the west desert of Utah where beryllium is mined and is crushed
during the mining process. The name bertrandite is misleading as it
is not the major mineral in the stone. The name tiffany stone came from
the patterns in the stone resembling tiffany glass. It is an opalized
stone that forms in nodules, composed mostly of opalized fluorite with
other minerals such as quartz, chalcedony, dolomite, rhodonite, manganese
oxides, bertrandite, beryl, opal, and others. Most commonly patterned
in purple, blue, white and black it is an unusual and beautiful gemstone.
Click on image for details
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