A beautiful specimen of Pruskite with a unique deep red color! Such large crystals of this mineral are rare, which makes this specimen even more unique A labgrown specimen with a glassy luster, very well formed crystal cluster on matrix. Excellent quality and shape. Please note that the Pruskite should not be washed with water, use compressed air or alcohol to clean it. The lab specimen should not be exposed to full sunlight for a long time.