Papagoite Value, Price, and Jewelry Information


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

An overview on Papagoite Jewelry and Gemstones. Covers details and essential information on the physical properties and characteristics of Papagoite gems.

Papagoite Value

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Papagoite Information

DataValue
NamePapagoite
Crystallography Monoclinic; crystals tiny, flattened; usually microcrystalline coatings and aggregates, sometimes mixed with quartz.
Colors Cerulean blue; leaves no streak.
Luster Vitreous.
Fracture Pure mineral is brittle, tough if mixed with quartz.
Hardness 5-5.5; may be approximately 7 if silicified.
Specific Gravity 3.25 if pure; may be lower (for example, 2.42 on Arizona material) if mixed with quartz.
Birefringence 0.065.
Cleavage Distinct on crystals; not observed on microcrystalline material.
Stone SizesCabochons up to several inches in length can be cut from the massive material.
Luminescence None reported; inert in LW and SW.
Spectral Bands centered at 4480, 5150, and 5550.
FormulaCaCuAlSi2O6(OH)3
Pleochroism None reported.

Optics: a= 1.607; β=1.641; γ=1.672.

Biaxial (-).

Occurrence: Originally found as tiny crystals associated with ajoite at Ajo, Pima County, Arizona. This was not cuttable. Material mixed with quartz was reported from a locality near Elko, Nevada. This is hard, tough, and takes a high polish making it suitable for cabochons. A regular interlocking structure is visible under magnification, and tiny metallic copper crystals may also be noted. The material is similar in appearance to chrysocolla or turquoise. Cabochons are translucent to opaque with a vitreous luster.

Name: For the Papago Indian tribe that lived in the region around Ajo, Arizona.