PYR-R-01 Origin: Peru Grade: A Dimensions: 10-20g - Approximately 15-20mm 20-30g - Approximately 20-25mm 30-40g - Approximately 25-35mm 40-60g - Approximately 35-45mm Origin: Peru Grade: A = good Tumbled Pyrite Stone from Peru Sold individually. Weight from 10-20g to 40-60g Shapes and colors may vary from one stone to another. Pyrite is a stone composed of iron disulfide. It can also contain nickel, cobalt, arsenic, copper, silver, and even gold. It has a golden color that can range from yellow to brown, unlike gold which always remains golden. This stone, often mistaken for gold, is sometimes found in the composition of certain meteorites.