Pyrite blocks negative energy creating an optimistic outlook and is also helpful for expanding your mental capabilities.  Optimism/Hope/Mental Stability

Turquoise is beneficial for maintaining relationships, fulfilling your potential and purifying the body.  Friendship/Purification/Self-Realization

The Circle of Hope combination of crystals is also beneficial for the following conditions:  Alcoholism, Asthma, Blood Conditions, Bone Disorders, Bronchitis, Cancer, Cramps, Depression, Detoxification, Digestion, Drug Addictions, Eye Disorders, Fatigue, Gout, Inflammation, Isolation, Male Fertility, Memory, Panic Attacks, Paranoia, Sexual Abuse, Skin Conditions, Sore Throat, Tissue Regeneration, Viral Infections