Gem
Silica Cutting Rough Page 1 - $1.40/gram
Gem Silica is prized for it's fine blue color and hardness. Gem silica is chalcedony
(microcrystaline quartz) that is colored with copper. It is becoming very difficult
to find good gem silica. This material is from the collection of a fellow who
worked at the Ray Mine in the early 1960's.
Item #:
Gem Silica1F - Gem Silica - $4.41
Locality: Ray Mine, Pinal County, Arizona
Measures approximately 32mm long x
16mm wide at the widest point x 4.7 thick tapering to a knife edge. Weighs
3.15 grams.
Item #:
Gem Silica3F - Gem Silica - $9.77
Locality: Ray Mine, Pinal County, Arizona
Measures approximately 31.5mm long
x 28mm wide x 6mm thick tapering to a knife edge. Weighs
6.98 grams.
Item #: Gem Silica4F - Gem Silica -
$21.52
Locality: Ray Mine, Pinal County, Arizona
Measures approximately 47mm long x
21mm at the widest point x 19.5mm thick tapering to a knife edge. Weighs
15.37 grams.
Item #:
Gem Silica18F - Gem Silica - $19.25
Locality: Ray Mine, Pinal County, Arizona
Measures approximately 56.5mm long
x 24.5mm at the widest point x 8.5mm thick tapering to a knife edge. Weighs
13.75 grams.
Item #:
Gem Silica19F - Gem Silica - $36.51
Locality: Ray Mine, Pinal County, Arizona
Measures approximately 31.5mm long
x 31.5mm x 19 to 11mm thick. Weighs
26.08 grams.
Item #:
Gem Silica20F - Gem Silica - $52.42
Locality: Ray Mine, Pinal County, Arizona
Measures approximately 40mm long x
31mm x 18.5 tapering to 8.3mm thick. Weighs
37.44 grams.
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