Ferberite, Quartz

Magnificent, very large, highly-aeasthetic specimen featuring dozens of razor-sharp, highly-lustrous black Ferberite crystals (some twinned) arranged across a matrix of gemmy undamaged clear quartz crystals, from the Kami Mine in Ayopaya Province, Cochabamba, Bolivia. For the species (ferberite) this is truly one of the best specimens I have ever seen, just fantastic. Mark Cross photo.

** Due to the large size and weight of this specimen, this will not be shipped… local delivery can be arranged within ~500 miles of Denver, or a pickup at the 2026 Tucson Gem & Mineral Show. **