What is Pyrite?
Pyrite is a sulfide mineral.  It is also known as "Iron Pyrite" and "fool's gold".
 
Pyrite Associations
Chakras - Solar Plexus Chakra
Zodiac - Leo
Element - Fire/Earth
Numerical Vibration - Number 3
Typical colors - Pale brass-yellow with some black veins
 
Healing with Pyrite
♥ Intelligence ♥ Mental stability ♥ Logic ♥ Creativity ♥ Psychic development ♥ Memory ♥ Practicality ♥ Optimism ♥ Channeling abilities ♥ Learning and Perception

Pyrite is a powerful protection stone which shields and protects against all forms of negative vibrations and/or energy, working on the physical, etheric, and emotional levels.  It stimulates the intellect and enhances memory, helping to recall relevant information when needed.  Pyrite assists one in seeing behind facades, promoting an understanding of that which lies beneath words and actions.  The ancient Incas used Pyrite for meditation and divination.
Pyrite inspires the universal energies to activate the nourishing energies of the body.  It encourages the ideal of health, intellect, and emotional well-being.  It allows one to recognise the purity of the universe.
It can be used in the treatment of bones and in the healing of cell formation.  It treats lung disorders and bronchitis and has been used to reduce swelling and fevers.  Pyrite aids in the treatment of infective disease, whilst also providing protection from the disease for the caregivers.
 
Crystals Containing Pyrite
Pyrite appears as golden flecks throughout the Lapis Lazuli gemstone.
Brass
According to medical professionals, wearing brass may help to absorb brass(copper and zinc) which affect health in positive way. However, the brass jewelry may cause wearer skin allergy to whom it is allergic, which is rare. It is positive influence in metabolism, absorption and transportation of iron to the body, and melanin production in the skin. Brass can treat or alleviate the pain of arthritis as well.
1) Natural Antimicrobial and Antibacterial
Because of sufficient amount of copper in brass it has antibacterial properties and because of constant contact with skin, skin absorbs copper and which enters the body. It is proven by science that copper has Antibacterial properties.
2) Improved Metabolic Function 
Brass is known to help in improving digestion and reducing inflammation
3) Increases Energy
Medical specialists saw when metal is worn close to the skin it’s anything but an increment in blood stream and affect the body. Metals, for example, Copper and Brass have electromagnetic properties thus does your body. Ionic powers can collaborate to adjust blood stream and increment energy levels.