MARCASITE
Sight Stone
 
Healing : The name marcasite, in fact, is believed to come from Arabic word for pyrite, they have the same chemical formula, though pyrite has a different crystal system.
Expands psychic vision, promotes clairvoyance, increases the ability to see discarnate entities and "ghosts". Protects from negative entities and energy.
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Cool Facts : 
1.The most important difference between pyrite and marcasite is their difference in stability in the surface and near-surface environment. Marcasite is much more reactive than pyrite, and it alters at a much more rapid rate. Marcasite will tarnish rapidly when exposed to the weather and will even tarnish in the specimen drawers of a classroom.
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2. "Marcasite" jewelry is occasionally encountered for sale today, but it was much more popular in Victorian and Art Nouveau designs of the late 1800s and early 1900s. Much of this jewelry was not made with marcasite. Instead, most was made with pyrite or imitation "gemstones" made of metal. Mineralogical marcasite is almost unknown in this jewelry even though the name "marcasite" is used for it. So becareful !