Miniature, 3.8 x 2.8 x 2.2 cm
Judas Shaft, Fresnillo, Zacatecas, Mexico

An outstanding, brilliantly metallic-lustrous specimen of pyrargyrite on minor matrix, from a 2006 find at this important locality. When backlit, it glows ruby red. But just in normal lights, it is so bright and shiny that you think it must be a sulfide of some kind, rather than pyrargyrite at the top of its luster game.

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