GOLD (4.51 ozt)
Leadville, Lake County, Colorado, USA
8 × 5 × 2 cm,
$25,000
FLUORITE
near Cañon City, Fremont County, Colorado, USA
8 × 4.5 × 3.5 cm,
$450
SYLVANITE
Cresson Mine, Cripple Creek, Teller County, Colorado, USA
6.9 × 4.6 × 4.7 cm,
$3,500
GOLD
Idarado Mine, Telluride, San Miguel County, Colorado, USA
6.7 × 5.1 × 1.2 cm,
$350
HÜBNERITE
Ruby Mine, San Juan County, Colorado, USA
14 × 7 × 5 cm,
$850
FLUORITE
Sunnyside Mine, near Silverton, San Juan County, Colorado, USA
13 × 12 × 6 cm,
$350
BARITE with CALCITE
Book Cliffs, Grand Junction, Mesa County, Colorado, USA
20 × 13 × 8 cm,
$1,500
A Manual of Mining by M. C. Ihlseng
New York, USA
15 × 23.5 × 3.5 cm,
$40
Images in America - Globe by Wilbur A. Haak and Lynn F. Haak
South Carolina, USA
16.5 × 24 × 1 cm,
$8
Red Metal - The Calumet and Hecla Story by C. Harry Benedict
Michigan, USA
15.5 × 24 × 3 cm,
$30
Gemstones and Other Unique Minerals and Rocks of Wyoming by W. Dan Hausel and Wayne M. Sutherland
Wyoming, USA
15 × 23 × 2 cm,
$100