Green Cubic Fluorite Specimen with Stibnite & Pyrite, Yaogangxian Mine photochromic The blue hackmanite specimens generally

The blue hackmanite specimens generally do not show much tenebrescence (color change)

Size: 35 x 16 x 15 mm

There may be natural fractures present

Gorgeous Sumatran zebra amber specimen with inclusions wrapped in oxidized copper wire

From Indonesia

Green Cubic Fluorite Specimen with Stibnite & Pyrite, Yaogangxian Mine photochromic The blue hackmanite specimens generallyStriking specimen of translucent green Fluorite from the renowned Yaogangxian Mine, associated with lustrous black metallic Sb bearing sulfosalt crystals in the stibnite group, with minor pyrite. The sharply striated crystals display a dramatic contrast against the softly translucent fluorite, exhibiting subtle bronze to reddish internal reflections characteristic of berthierite (a rarer mineral associated with complex antimony rich hydrothermal