Only a handful of localities those offer us this quality coquimbite crystals. In this specimen we can enjoy a hexagonal shape crystal of this rare iron and aluminium sulfate showing an intense violet color under fluorescent light or LED type. It is accompanied by numerous yellow metavoltine crystals, along with fibrous halotrichite. Note that under the magnifying glass we can navigate in a world of brilliant crystals, some of which of krausite species (yellowish to grey transparent). We left this identification pleasure to the collector. Regarding its environmental stability, this sample has been stored during more than five years without further alteration.