Superb, well-defined set of gunmetal-silver Magnetite crystals on matrix. Typically the Magnetite specimens from this locality are closely grown together, but this one has exceptional definition and eye-appeal. The luster is better than most, as well. The overall quality is excellent, with large, razor sharp, lustrous, silver-black, "Alpine-type" octahedra on matrix with associated small, blocky white Feldspar crystals. The large Magnetite crystal measures an incredible 1.8 cm on edge. Frankly, this is among the best Bolivian Magnetite crystals I have seen, quality-wise, in any size, and these rate highly among all Magnetites, period, at a fraction of the price a crystal might cost from more historic locales. With simple, clean aesthetics, it is a fabulous thumbnail. Ex Brian Kosnar collection