Hopeite is a rare hydrated zinc phosphate, with the very best specimens worldwide coming from the Broken Hill Mine of Zambia. This superb honeycomb specimen is a nearly solid mass of gemmy and lustrous, orange-brown hopeite prisms to 9 mm on just a thin crust of matrix. These are large crystals for the species. Super and very well crystallized material, which probably dates to the 1950-60s. Accompanied by a faded Burminco label.