Cobaltite Value, Price, and Jewelry Information


Cobaltite
Rob Lavinsky, iRocks.com – CC-BY-SA-3.0 [CC-BY-SA-3.0 (http://creativecommons.org/licenses/by-sa/3.0)], via Wikimedia Commons

Cabochons are interesting because of the lovely reddish metallic appearance of this mineral. Cut stones are infrequently seen and are cut only as a curiosity by the collector who wants to have one of everything.

Cobaltite Value

The International Gem Society (IGS) has a list of businesses offering gemstone appraisal services.

Cobaltite Information

DataValue
NameCobaltite
Crystallography Isometric. Crystals usually cubes and pyritohedra or combinations of forms; also massive; granular.
Colors Silvery white to reddish, steel gray with a violet tinge; blackish gray.
Luster Metallic; opaque.
Fracture Uneven. Brittle.
Hardness 5.5
Specific Gravity 6.3
Cleavage Perfect 1 direction.
Stone SizesMassive material would cut stones of any desired size.
Luminescence None.
Spectral Not diagnostic.
FormulaCoAsS.

Streak: Grayish black.

Occurrence: High temperature deposits, in metamorphosed rocks, and in vein deposits. Colorado; Idaho; California.

Dashkesan, Ajerbaijan, USSR; India: Sonora, Mexico; Tunaberg, Sweden; Norway; Cerrnany; Cornwall. England; Western Australia. Cobalt, Ontario: in masses and fine crystals.

Comments: Cabochons are interesting because of the lovely reddish metallic appearance of this mineral. Cut stones are infrequently seen and are cut only as a curiosity by the collector who wants to have one of everything.

Name: From the composition.