I got this list on; www.sobrietystones.com. They use healing stones along with the 12 step program.
Protection from Negativity -
Citrine: Brings happiness, joy and optimism into your life. One of only two minerals on the planet which do not hold or accumulate negative energy, but dispels and transforms it. You don't ever have to cleanse Citrine, because it doesn't hold any negativity!
Garnet: Noted for its powerful protective energy. Carried by ancient soldiers for protection . The stone was set in shields, buckles, and other items worn by Crusaders.
Hematite: It helps to balance out the emotions and energies between the body, mind and spirit. Not only does it dissolve negativity, but actually transforms it into the energy of Universal Love.
Pyrite: protection from negative energy on your path
Ruby: protection on all levels including unhappiness - here to encourage you to follow the bliss
Quartz Crystal Clear Point - A very powerful amplifying stone that dispels all negativity around you.
Obsidian: This is and excellent grounding and protective stone shielding against negativity and transforming negative energy within an environment.
Fire Agate: (base) is a protective shield sending all threat of harm back to its source.
Amethyst, Turquoise, Jasper
Eye shaped Agates protect against Evil Eye.
First rate protector to ancient Romans.
Protection from Evil.
Protect Sailors at sea.
Protect against evil magic and political unrest.
Repel evil-spells and ill-wishers.
Protect from Evil Eye.
Protection from envious persons.
Protection when worn.
Protects warrior going to battle.
Protects children from danger.
Jaspers are said to bring protection.
Protects and absorbs negative energies.
Protect the aura from energy leakages.
Protect against Evil Eye and also children from Witchcraft from Evil Spirits.
Protect those at sea.
Protect newborn infants.
Strong protector. Psychic protection.
Protects entire body. Protects from demons..
Protect women during childbirth..
Protect in dangerous situations and bring rescue.
Used as building, religious and burial protection..
Hindus believed it protected everything--home, family, possessions..
Venom of snakes..
Protect from negativity in healing/other realms.
Protect from destructive forces.
Said to return evil wishes/spells back to sender.
Protects from greed.
Black Tourmaline is thought to be a powerful Protector..
Protects from injury.
Protects from lightning, robbery, bodily harm and disease.