1
Stillwellite
Stillwellite is a rare REE borosilicate and some of the best crystals of the species originate from the rugged mountains of Tajikistan. This is one of the better crystals collected from a remarkable pocket in September of 2004. It features a huge 2cm, translucent medium brown-yellow (normal indoor lighting) crystal on alkaline pegmatite matrix. Interestingly, they COLOR CHANGE from red in halogen or sunlight to YELLOW in fluorescent light. This is a superb, nearly complete crystal for the species, as well as being unusually attractive for the mineral. An old The Arkenstone label accompanies the piece from Rob's days in California while going to grad school. He bought this from the Fersman Museum in the mid 1990s; the museum label is still included with the piece. It is exceptional for the species. From an old find not repeated since.
Unknown Owner
Product details
Species
SizeMiniature
Dimensions5.0 x 4.7 x 4.7 cm
Locality
Darai-Piez Massif, Alai Range, Tien-Shan Mountains, Tajikistan
Added on10/23/2024
Known provenance
2024/08
Unknown
Not disclosed—Species and Locality Wiki Pages
Collectors of Stillwellite
Stillwellite Sales Data
From
To
From
To
Loading sales data...
All Sales
Loading specimens...