Pyrite
Gemstone
>
The mineral pyrite, or iron pyrite, also known as fool's gold, is an iron sulfide with the chemical formula FeS₂. Pyrite is the most abundant sulfide mineral.
Pyrite's metallic luster and pale brass-yellow hue give it a superficial resemblance to... Wikipedia
Colors: Yellow, Grey, and Metallic color
Density: 5 g/cm³ (approximately)
Hardness (Mohs hardness scale): 6 – 6.5
Luster: Metallic
Chemical formula: FeS2
Cleavage: Indistinct on; partings on, and
Crystal system: Cubic