Nightmares

Nightmares can be prevented by wearing heliotrope to bed. Chalcedony is also effective in combating anxiety-filled dreams. Rose quartz next the bed (uncut) should be discharged once a week under running water.

Menstrual Problems

Lay pyrite on the painful area for twenty minutes a day. For regulating and stabilizing fluctuations in hormones, it is best to wear pearl and moonstone. Very good results are obtained by placing a flat piece of malachite a hand's breadth below the navel during that "time."

The Main Gemstones for Cancer

Emerald~ stability and alleviates mood swings/absorbs negative vibrations
Moonstone~ helps Cancer face reality and strive for the highest ideals
Aventurine~ peace in heart and mind
Chalcedony~ gain creativity and break free of negative bonds
Jade~ confidence to trust their feelings/security in difficult situations
Opal~ harmony
Pearl~ wisdom and sincerity/guard against danger/contentment in old age
Olivine~ anxiety and depression/skin disease and metabolic disorders
Chrysoprase~ connection with others and balance between conscious and unconscious
Chrysocolla~ intuition and imagination/hate and anger

Other important stones:

Carnelian
Rhodochrosite
Sodalite

Tumors

It is said that if sard is placed directly on the tumor in the early stages, one can retard or stop its growth.