Sulfide Family

Sulfide minerals are a family of minerals with sulfur combined with one or more metal. Sulfides are important indicator minerals of metal deposits. 

Sulfides used in jewelry include:

Iron Pyrite - Iron and sulfur a brassy colored brittle mineral

Marcasite - Iron and sulfur but a lighter and white colored brittle mineral

Chalcopyrite - Copper, iron and sulfur in a common sulfide in many metal veins. 

Bornite - Copper, iron and sulfur in a less common colorful sulfide

Covellite - Copper and sulfur in a simple and rare combination.