Bournonite, sphalerite

Bournonite on the sample forms grey-colored, steel-grey crystals. Sphalerite here creates diamond-gloss metallic grey crystals that reach sizes up to 1 cm and sit on top of each other. In places, a light brown color shines through on the sphalerite crystals. This sulfide specimen is a rich sample originating from the locality of Cavnic, Romania.