Rare. and unique native Platinum (PGE) nugget. COOPERITE. Natural PGE alloys nugget from Russia. Platinum is a commercially valuable metallic native element, prized for its physical resistance to chemical and temperature assault, its ductility and malleability, and its utility in enabling catalytic reactions. It is also a precious metal and in the natural form also a rare collecting asset. Non magnetic. Tested with hydrogen peroxide, an immediate reaction is catalyzed. Natural platinum has a Mohs hardness of 4-5, making it moderately fragile. Despite careful multi-layer packaging, we cannot guarantee that the mineral will be delivered undamaged, please take this into account.