piece of green cyanotrichite mineral from france. a hydrous copper aluminium sulfate mineral

abstract aluminium beautiful beauty blue close closeup cluster copper crystal crystalline crystallized crystals cyanotrichite detail fibrous formation gem gemmology gems gemstone geologists geology green hydrous isolated lettsomite macro material mineral mineralogy monoclinic natural nature organic pattern precious prism raw rock selenium semiprecious shape sharp specimen stone sulfate surface texture unique