Crystal & Stones

Natural pyrolusite specimen from Cavnic, Romania; Rob Lavinsky, iRocks.com, CC BY-SA 3.0 — Roosters Peacock crystal guide
Pyrolusite: The Stone of Grounding, Cleansing & Practical Focus
Explore Pyrolusite—MnO2—its manganese-ore importance, variable hardness, glassmaking history, modern symbolism, and careful specimen handling. Read more...