A superb specimen of volborthite crystals from the famous Milpillas Mine, Mexico. Volborthite is a rare copper mineral and these are considered the best examples for the species. It displays vibrant dark olive-green volborthite crystals forming radial rosettes. They are well shaped with a sparkling appearance. It shows attractively on both sides. For references see the 2021 issue of The Mineralogical Record vol. 52, # 5. In excellent condition – some natural imperfections. On acrylic base.

Outstanding volborthite!