Pyrite (Fool's Gold)
Pyrite, known as fool's gold, is a common brass-yellow iron sulfide mineral often sold as small rough specimens or crystals in the fossils and minerals market.
Estimated value as of 2026 · Source: Etsy listing for 3 medium 2" pyrite pieces
Fun Fact
Pyrite earned its 'fool's gold' nickname due to its metallic luster resembling gold, though it is much less valuable and primarily iron disulfide.
Price History
More in Nature
Californium-252 (per gram)
Californium-252 is a synthetic radioactive element produced in nuclear reactors, valued as an exceptional neutron source for medical and industrial applications.
Dog Collar
A dog collar is a band worn around a dog's neck, typically made of nylon or leather, used for identification, control, and attaching leashes.
Fossil Tyrannosaurus Rex Skeleton (Stan)
Nearly complete T-Rex skeleton auctioned for research and display.
Moon Rock Sample (From Apollo 17 Mission)
Lunar basalt specimen collected during humanity's final Apollo mission in 1972.