Luster: Pyrite has a metallic luster, while gold has a more satiny luster.
Hardness: Pyrite is harder than gold, with a Mohs hardness of 6-6.5, while gold has a Mohs hardness of 2.5-3.
Cleavage: Pyrite has perfect cubic cleavage, while gold does not have any distinct cleavage.
Streak: Pyrite has a greenish-black streak, while gold has a gold-yellow streak.
Specific gravity: Pyrite has a specific gravity of 5.02, while gold has a specific gravity of 19.3.
Crystal structure: Pyrite has a cubic crystal structure, while gold has a face-centered cubic crystal structure.
Chemical composition: Pyrite is composed of iron sulfide (FeS2), while gold is composed of elemental gold (Au).
