An exceptional specimen of volborthite crystals on a matrix 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 to 12mm. They are well shaped and lustrous with a sparkling appearance. For references see the 2021 issue of The Mineralogical Record vol. 52, # 5. In very good condition – one contact area. On acrylic base.

World grade quality volborthite rose!