Here we have iron pyrite flat stones with what I believe is magnetite.
The combo means this piece will probably break if you drop it or exert pressure. Do not soak this in water as it make weaken the structure.
The golden pyrite is most often bought to help you stay strong during times when you feel your resolve and willpower are weakening. And it is said to It can be used in the treatment of bones and in the healing of cell formation.
The black magnetite is magnetic and has powerful positive-negative polarity. It attracts and repels, energises, sedates and provides stability, balancing the intellect with the emotions.
The flat shape is great to stroke, put in a big pocket, lay on the body and may fit a hemp necklace.
Enjoy selecting which of the iron pyrite flat stones is for you.