There are so many and often it depends on which one works for you personally.
Try Kunzite for relaxation or a green or pink crystal like Rose Quartz or aventurine.
You can pick up crystal books quite cheap or contact me if you want more information. I deal in crystals and crystal related products and can get anything for you.
It depends on the particular problems but I can recommend a few.
Rose Quartz: its a gentle healer and represents unconditional love – something everyone needs.
Clear Quartz: multi-purpose healer
Kyanite: helps to balance energy and the chakras
Amethyst: deals with the third eye, intuition etc.
Flourite: helps for general healing of the body
The only one I would recommend keeping away from is malachite because it magnifies a situation, which could make things worse. Also the stones need to be highly polished, as the dust from malachite is poisonous.
I hope that helps. 🙂
You need a crystal that will cleanse and calm your mind,get rid of any negative emotions.
Milky quartz releases difficult emotions and calms an overactive mind.
Apophyllite gently cleanses the mind and body it also gets rid of any feelings of insecurity or hard to handle emotions.
Amethyst calms the mind
Carnelian releases stress and is a general healing stone
Rose quartz releases emotional stress