SPESSARTINE
Ruby Mountain, near Nathrop, Chaffee County, Colorado, USA
4.4 × 3 × 2.9 cm,
SOLD
SPESSARTINE
Ruby Mountain, near Nathrop, Chaffee County, Colorado, USA
5.9 × 3.7 × 4.8 cm,
SOLD
QUARTZ var. Amethyst
Yellow Pine Mine, Boulder County, Colorado, USA
3.3 × 3.3 × 1.9 cm,
SOLD
FERBERITE
Boulder County Tungsten District, Boulder County, Colorado, USA
2.7 × 2.2 × 1.5 cm,
$450
FERBERITE
Chance Mine, Boulder County, Colorado, USA
6 × 3.7 × 3.1 cm,
SOLD
QUARTZ with PYRITE
Caribou Mine, near Caribou, Grand Island District, Boulder County, Colorado, USA
5.6 × 3.2 × 2.7 cm,
SOLD
GEARKSUTITE with FLUORITE
Burlington Mine, Jamestown, Boulder County, Colorado, USA
7.9 × 6.5 × 3.9 cm,
SOLD
SILVER
Caribou Mine, near Caribou, Grand Island District, Boulder County, Colorado, USA
1.6 × 2.5 × 1.4 cm,
SOLD
PYRITE
Wallstreet, Boulder County, Colorado, USA
4.7 × 4.7 × 3.8 cm,
SOLD
METATORBERNITE
Nations Treasure Mine, Porphyry Mountain, Jamestown, Boulder County, Colorado, USA
5.2 × 4.2 × 3.1 cm,
SOLD
SANIDINE
Gold Hill District, Boulder County, Colorado, USA
4 × 2.5 × 1.8 cm,
SOLD