Collection: New Arrivals

Size: 5.8 cm Origin: Inner Mongolia, China

Size: 6.1 cm Origin: Inner Mongolia, China

Size: 7.3 cm Origin: Inner Mongolia, China

Size: 4.7 cm Origin: Inner Mongolia, China

Size: 5.2 cm Origin: Inner Mongolia, China

Size: 6.2 cm Origin: Inner Mongolia, China

Size: 11.5 cm Origin: Inner Mongolia, China

Size: 11.3 cm Origin: Inner Mongolia, China

Optical calcite with birefringence, as used by Vikings as a compass Size: 4.7 cm

Optical calcite with birefringence, as used by the Vikings as a compass Size: 4.3 cm...

Optical calcite with birefringence, as used by the Vikings as a compass Size: 3.8 cm...

Optical calcite with birefringence, as used by Vikings as a compass Size: 5.6 cm

Optical calcite with birefringence, as used by the Vikings as a compass Size: 5.7 cm...

Optical calcite with birefringence, as used by Vikings as a compass Size: 4.6 cm

Optical calcite with birefringence, as used by Vikings as a compass Size: 4.4 cm

Origin: Morocco

Origin: Morocco

Origin: Morocco

Origin: Morocco

Origin: Morocco

Origin: Morocco

Origin: Madagascar

Origin: Madagascar