This piece features several sharp, lustrous, metallic grey/silver color tetrahedral crystals of Tetrahedrite measuring up to 2.7 cm on edge. They are associated with some very gemmy, stubby, colorless Quartz prisms. There is one spot on this specimen where the Quartz crystals have formed a beautiful "flower"-like or "star-shaped burst" which is sitting atop complimenting Tetrahedrite crystals in a similar shape. Ex. Brian Kosnar Collection.