Search Archived Mineral Specimens
- Availability
- Sold
- Locality
- PC mine, Jefferson Co., Montana, United States
- Formula
- SiO2
- Size
- Thumbnail 3x3x0.3cm
A waterclear fantastic Japan-law twinned Quartz crystal. You can actually see the twin plan down through the center. It is Mindat #7G4-J5N, collected by Chris van Laer in 1983. Excellent condition.
- Availability
- Sold
- Locality
- Goldflint Mtn., Jefferson Co., Montana, United States
- Formula
- SiO2
- Size
- Thumbnail 2.6x1.6x1.5cm
A single roughly doubly terminated amethyst tipped crystal with interior smoky color. One end is well terminated with the other end roughly terminated with a small attachment point. The overall crystal is also shows a offset growth of another crystal. It is a nice, lustrous specimen. It was collected by Chris van Laer in 2000.
- Availability
- Sold
- Locality
- Boulder Batholith, Silver Bow Co., Montana, United States
- Formula
- SiO2
- Size
- Thumbnail 3x1.2x1.5cm
A rich deep purple single crystal showing excellent skeletal growth on two faces. Excellent gemmy specimen. Obtained by Chris van Laer in 2004.
- Availability
- Sold
- Locality
- Boulder Batholith, Silver Bow Co., Montana, United States
- Formula
- SiO2
- Size
- SmCabinet 6x4x2.5cm
An excellent rich purple to smoky amethyst crystal group, doubly terminated with a characteristic hopper growth.
- Availability
- Sold
- Locality
- Devil's Den, Boise Co., Idaho, United States
- Formula
- SiO2
- Size
- SmCabinet 6.5x3x2cm
A gorgeous amethyst specimen with parts smoky and inclusions of Hematite. This is actually one crystal with several overgrowths. Go Cubs. It is fascinating to look and ponder. Collected by Chris van Laer in 1992.
- Availability
- Sold
- Locality
- Basin Creek, Jefferson Co., Montana, United States
- Formula
- SiO2
- Size
- Miniature 5x3.5x3cm
Beautiful multiple peaked amethyst group with three main crystals and a smaller at the base. The large crystals carry a nice deep purple color in places with each showing negative growth to some degree. There is a detachment point at the base. Excellent specimen found in 2004.
