Cuprite

Weijia, Chengmenshan, Jiujiang Prefecture, Jiangxi Province  China (2007)

Specimen size: 4.4 × 2.5 × 3.4 cm = 1.73” × 0.98” × 1.34”
Main crystal size: 0.4 × 0.4 cm = 0.16” × 0.16”