Pseudomorphs

Pseudomorphs are fascinating mineral specimens formed when one mineral is replaced by another while retaining the original mineral's external crystal form. This process, known as pseudomorphism, can occur through chemical alteration, substitution, or replacement, preserving crystal habits that would otherwise be lost. Examples include malachite after azurite, quartz after fluorite, and limonite after pyrite. Highly valued by collectors for their unusual formation processes and preserved crystal structures, pseudomorphs offer a remarkable record of mineral alteration. Explore our selection of unique pseudomorph specimens for your collection.