A superb specimen of brochantite crystals from the famous Milpillas Mine, Mexico. The mine produced among the best examples for the species. It displays vibrant electric-green color brochantite crystals in a cluster. They are sharp and well shaped blade crystals, with a strong luster. Delicate needle crystals form a dense carpet. The colorfulness of the specimen is excellent. For references see the 2021 issue of The Mineralogical Record vol. 52, # 5. Some contacts.

Fabulous brochantite!