Hemimorphite

Hemimorphite is a zinc silicate mineral (Zn₄Si₂O₇(OH)₂·H₂O) that produces some of the most delicate and beautiful blue mineral specimens in any collection. Our hemimorphite selection features sky-blue to turquoise crystal clusters, druzy coatings, and botryoidal formations that showcase this mineral’s ethereal coloring and distinctive crystal habits.
The mineral takes its name from “hemimorphism” — meaning its crystals are differently terminated at each end, a relatively unusual feature in the mineral world. Hemimorphite forms in the oxidation zones of zinc ore deposits, where weathering processes transform primary zinc sulfide minerals into this hydrous silicate. The blue color comes from copper impurities substituting for zinc in the crystal structure, and the intensity varies from pale sky blue to vivid turquoise.
Yunnan Province in China produces some of the world’s finest hemimorphite specimens, with electric blue druzy clusters on dark matrix that create dramatic visual contrast. Mexican and Zambian deposits also produce collector-quality material. At Mohs 4.5-5, hemimorphite requires careful handling and display in protected settings — avoid water and acids, which can damage the mineral surface. Browse our hemimorphite mineral specimens to add the distinctive blue of zinc silicate to your collection.