PYR-18 Origin: Spain Grade: A Dimensions: Between 15 and 20mm Weight: Between 20 and 30g Origin: Spain Raw pyrite cube from Spain weighing approximately 20-30g. Sold individually 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. This magnificent golden stone can be of sedimentary, magmatic, or hydrothermal deposit origin.