- Phosphophyllite cluster
- Thumbnail, 1.5 x 1.5 x 0.8 cm
- Unificada Mine, Cerro de Potosi, Potosi City, Potosi Department, Bolivia
Rarer than almost anything else, Phosphophyllite is probably the most sought after of mineral species by collectors, considered one of mineral collecting's holy grails. This thumbnail is a cluster of incredibly bright, lustrous, GEM crystals of twinned Phosphophyllite from this old locality. Complete alla round, this is a rare cluster. In person, it is even more gemmy, and better than the pics. Crystals like this were found almost 70 years ago, and not in this quality since.