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Pyrite-in-Agate Gemstone Introduction Pyrite-in-agate is a unique and captivating gemstone that combines the properties of agate with inclusions of pyrite. Agate is a form of chalcedony known for its banded patterns, while pyrite, often referred to as "Fool's Gold," is an iron sulfide mineral with a metallic luster and a brass-yellow hue. The combination of these two materials results in a gemstone...