Obsidian
Obsidian helps to protect the very sensitive against depression. It is the stone of the soft hearted and gentle people of the world. Use obsidian to help block negativity of any kind. As a black gemstone, it symbolizes self control and resilience. Black stones have protective energies in the sense that black is the absence of light, and therefore, can be used to create invisibility.
 
Aluminum: This metal is associated with Uranus, Mercury, and air elements. It assists with alkaline metabolic processes and helps to decrease over acid conditions, or too much acidity in the stomach. In addition, it also assists with the iron absorption in the intestines and with conductivity in the nerves. Aluminum reflects aetheric energies better than any other metal . It can also deflect energies, and is very protective. Aluminum also helps with nervousness, fears, guilt, expression, letting go of grudges, desire for change, sobriety, alertness, remorse, removes illusions, brings a sense of reality, finding yourself, and helps provide a reflection of one's journey.
 
Gold helps with depression, fear of death, or desire to commit suicide. It also helps to give self confidence, and protection against destructive influences. In addition, gold also helps to give one a meaning to life, it enables realization of good deeds and projects, and it represents generosity. Physically, gold promotes distribution and cirulation of energy and vitality in the body. It helps with issues and diseases of the reproductive system. It also supports gland functioning and assists in healing damage to bones and tissues. It also helps to regulate nervous system impulses.