Quartz

Pena Blanca Mine, San Pablo de Borbur, Western Boyaca Prov., Boyacá Dept., Colombia

Cabinet, 11.9 x 5.5 x 4.7 cm

Quartz

Ace of Diamonds Mine, Middleville, Herkimer Co., New York, USA

Thumbnail, 2.3 x 1.7 x 1.7 cm

Hematite

Via Grande Mine, Quartzsite, La Paz Co., Arizona, USA

Thumbnail, 2.8 x 1.4 x 0.8 cm

Hematite

Korshunovskoye Iron mine, Zheleznogorsk, Irkutskaya Oblast, Eastern-Siberian Region, Russia

Miniature, 5.0 x 3.9 x 3.5 cm

Hematite

N'Chwaning Mine, Kalahari manganese field, Northern Cape Province, South Africa

Miniature, 4.1 x 3.2 x 2.1 cm

Hematite

Wessels Mine, Hotazel, Kalahari, Northern Cape, South Africa

Miniature, 3.7 x 2.5 x 2.0 cm

Hematite

Thomas Range, Juab Co., Utah, USA

Thumbnail, 2.3 x 1.8 x 0.1 cm

Hematite

Brumado, Bahia, Brazil

Small Cabinet, 6.5 x 6.2 x 0.2 cm

Hematite

Mefis, Taouz, Er Rachidia Province, Draa-Tafilalet Region, Morocco

Cabinet, 10.8 x 8.3 x 5.5 cm

Hematite

Cavradi Gorge, Curnera Valley, Grisons, Switzerland

Small Cabinet, 8.0 x 3.7 x 3.3 cm

Hematite

Itabira, Minas Gerais, Brazil

Small Cabinet, 6.3 x 5.1 x 0.6 cm

Quartz

Huanggang Fe-Sn deposit, Chifeng City, Inner Mongolia, China

Cabinet, 9.2 x 7.4 x 6.0 cm

Quartz

Gerstenegg-Sommerloch tunnel, Guttannen, Interlaken-Oberhasli, Bern, Switzerland

Small Cabinet, 6.6 x 5.8 x 3.2 cm

Hematite

N'Chwaning Mines, Kuruman, Kalahari manganese field, Northern Cape, South Africa

Thumbnail, 2.8 x 2.5 x 1.5 cm

Hematite

Nador Prov., Oriental Region, Morocco

Small Cabinet, 6.9 x 5.0 x 0.1 cm

Quartz

Paredón, Ramos Arizpe Mun., Coahuila, Mexico

Small Cabinet, 9.3 x 8.5 x 5.0 cm

Hematite

Ibitiara, Bahia, Brazil

Miniature, 4.5 x 2.4 x 1.7 cm

Quartz (beta style)

Nikolai Mine, Dalnegorsk, Primorsky Krai, Russia

Small Cabinet, 9.7 x 7.3 x 6.7 cm

Quartz (scepter)

Ace of Diamonds Mine, Middleville, Town of Newport, Herkimer Co., New York, USA

Small Cabinet, 5.4 x 2.8 x 2.1 cm

Quartz (pseudocubic)

Coleman Mine, near Jessieville, Arkansas, USA

Cabinet, 11.9 x 5.7 x 3.8 cm