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Pyrite is harder than gold. While Pyriteâs hardness is 6 to 6.5, gold has hardness around 2 to 3. Pyrite also contains high amount of iron. There is also a big difference in the specific gravity between gold and pyrite.While gold has a specific gravity of 15.6/19.3, pyrite has 5.0.old vs Pyrite. It is easy to make out the difference between Gold and pyrite. They have much difference in their structure, colour, hardness and specific gravity. When comparing gold and pyrite with regard to their colour, both have a metallic lustre but have different yellow tones.
Pyrite is sometimes called Fools Gold because of its similarity in color and shape to Gold. In the old mining days, Pyrite was sometimes mistaken for Gold, as they frequently occur together, although Gold and Pyrite can very easily be distinguished by simple observation and testing of characteristics.ombinations of these forms also occur. An icosahedron formed from a combination of an octahedron and pyritohedron is also known. Pyrite crystals frequently form penetration twinning, especially in the cubic form. Cubes are sometimes elongated in rectangular form.