SILVER
Caribou Mine, near Caribou, Grand Island District, Boulder County, Colorado, USA
1.6 × 2.5 × 1.4 cm,
SOLD
QUARTZ with PYRITE
Caribou Mine, near Caribou, Grand Island District, Boulder County, Colorado, USA
5.6 × 3.2 × 2.7 cm,
SOLD
FERBERITE
Chance Mine, Boulder County, Colorado, USA
6 × 3.7 × 3.1 cm,
SOLD
GEARKSUTITE with FLUORITE
Burlington Mine, Jamestown, Boulder County, Colorado, USA
7.9 × 6.5 × 3.9 cm,
SOLD
QUARTZ var. Amethyst
Yellow Pine Mine, Boulder County, Colorado, USA
3.3 × 3.3 × 1.9 cm,
SOLD
NIFONTOVITE
Rey y Reina Mine, Charcas, Municipio de Charcas, San Luis PotosÃ, Mexico
0.4 × 2 × 0.3 cm,
SOLD
NIFONTOVITE
Rey y Reina Mine, Charcas, Municipio de Charcas, San Luis PotosÃ, Mexico
0.7 × 1.6 × 0.4 cm,
SOLD
TELLURIUM
John Jay Mine, Jamestown, Boulder County, Colorado, USA
5.5 × 3.5 × 2.5 cm,
SOLD
COLORADOITE
Phil Sheridan Mine, Sunshine, Gold Hill District, Boulder County, Colorado, USA
3 × 3.5 × 3 cm,
SOLD
ALTAITE
Ivanhoe Mine (?), Boulder County, Colorado, USA
4.5 × 3 × 1.5 cm,
SOLD
TELLURIUM
Magnolia District, Boulder County, Colorado, USA
6 × 2.5 × 1.5 cm,
SOLD