Stolzite Value, Price, and Jewelry Information

Rob Lavinsky, iRocks.com – CC-BY-SA-3.0 [CC-BY-SA-3.0], via Wikimedia Commons

Stolzite

Stolzite is a rare mineral; much rarer than wulfenite and usually occurs in very minute crystals. However, the Australian crystals may be up to 1 inch…

Stolzite Information

Data Value
Name Stolzite
Colors Brown, yellowish brown, fawn beige, tan, yellow red, red, greenish.
Crystallography Tetragonal; crystals tabular and thick, or dipyramidal. Crystal faces commonly striated.
Refractive Index 2.19-2.27
Luster Resinous to subadamantine.
Hardness 2.5-3
Fracture Conchoidal to uneven
Specific Gravity 7.9-8.34
Birefringence 0.08
Cleavage Indistinct
Stone Sizes Stolzite is a rare mineral (much rarer than wulfenite and usually occurs in very minute crystals. However, the Australian crystals may be up to 1 inch in size and tiny transparent areas have yielded very small cut stones of a bright orange color.
Luminescence None reported.
Luminescence Present No
Transparency Transparent to translucent.
Absorption Spectrum Not diagnostic.
Formula

PbWO4. Dimorphous with Raspite.

Pleochroism

Not reported.

Optics

o = 2.27; e = 2.19. Uniaxial (-).

Optic Sign Uniaxial -

Optics: 0 I 2.27; e : 2.19.

Uniaxial (—).

Occurrence: A secondary mineral in the oxidation zone of tungsten-bearing ore deposits.

Broken Hill, New South Wales, Australia.

Brazil; England; Sardinia: Germany; Nigeria.

Utah; Arizona; Massachusetts; Pennsvlvania.

Name: After Dr. Stolz of Bohemia who first called attention to the mineral.

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