Huge and best Collection of Pyrite Gemstone Egg at Lowest Price. Pyrite used to be an important ore for the production of sulfur and sulfuric acid. Today most sulfur is obtained as a byproduct of oil and gas processing. Some sulfur continues to be produced from pyrite as a byproduct of gold production. Pendulums are often used as tools for spiritual healing and inner growth. Order online only at RozRin Crystals as soon as possible.