Pyrite in Crystal

Approximate beads per strand: 38 What is it: The mineral pyrite, also known as fool's gold, is an iron sulfide with the chemical formula FeS2. Pyrite is considered the most common of the sulfide minerals. Pyrite's metallic luster and...

Approximate beads per strand: 95 What is it: The mineral pyrite, also known as fool's gold, is an iron sulfide with the chemical formula FeS2. Pyrite is considered the most common of the sulfide minerals. Pyrite's metallic luster and...