AGATE
Agate is a stone of strength. Good for transmutation, helps with the emotion of acceptance, gives a mellow, blended aspect, simplistic, has stabilizing effect, helps physical endurance. Agate enhances creativity and strengthens the intellect, making it a beneficial stone for both students and artists. It is also known as a good luck stone. Agate increases energy.
AMAZONITE
Amazonite is a mint green to aqua green stone of truth, honor, communication, integrity and trust. It is said to enhance intuition, psychic powers, creativity, intellect, and psychic ability. Amazonite is often associated with the throat chakra, and as such, can be beneficial to communication. It aligns the physical and astral bodies. It can lessen stress and self-defeating behaviors by calming and building self-esteem. Amazonite can assist with peacefully making the transition out of this life. Amazonite is said to heal emotional disturbances and the after effects of emotional trauma.
AMBER
Amber was one of the first substances used by man for decoration, and it was employed very early on for amulets and medicinal purposes.  Those who owned Amber felt that they had a talisman of great power. A highly calming stone that facilitates energy  balancing and cleansing. Removes psychic attacks and energy draining from others. Used by healers as a protective shield against taking on others pain in healing work. Also used as a preventative measure for traveling, may also help to prevent jet lag or sickness when traveling. 
AMETHYST
Amethyst is the stone of Spirituality and Sobriety. It is believed to be a spiritual crystal that can quicken spiritual growth and inspires healing powers, divine love and intuition. Wear Amethyst if you want to get in touch with your intuition, your feelings, or your values. It makes a wonderful spiritual gift.                     
AMETRINE
Ametrine is a variety of quartz that offers both Amethyst and Citrine in a single stone!  It is a very beautiful gem that should be utilized for its full potential.  Ametrine is a duality of man/woman, so this is a great choice to help bond couples in a loving way.  Not only will Ametrine teach you about the spirit world, but will also allow you to use your creativity and will power to the fullest. 
Apophyllite
Apophyllite is an aid to meditation and helps make a conscious connection with the spiritual world. It has been used to help in firewalking and astral travel. It is said to one see the truth and then act on it, and is an energy stimulator. Folklore says that It relieves tired eyes when placed on the eyelids. When placed on the third eye chakra, it enhances clairvoyance and mystical vision. Apophyllite is associated with the crown chakra.
Aquamarine

Aquamarine is claimed to bring serenity and peace of mind. In addition to calming the nerves aquamarine reduces fluid retention. This gem is good for strengthening the kidneys, liver spleen and thyroid. It is also an excellent general cleansing gem. Aquamarine brings clarity of thinking, so it is beneficial to carry it into examinations, on a driving test or while meditating. It is believed to improve artistic and creative skills. Aquamarine's primary quality is to inspire love, peace and serenity. An excellent gem to  help you to overcome anxiety and stress. 

AVENTURINE GREEN
Eliminates fear and gives positive attitude, creative insight. Aventurine increases intuition, perception and foresight. This stone attracts money, heals and stabilizes. This is the stone of opportunity. Aventurine is known as the stone of chance or luck. If you gamble or play the lotto, keep this stone in your left pocket.

BLUE LACE AGATE

This is a calming, uplifting stone. The blue color strengthens the function of the throat chakra and encourages peace. It can be used wherever there is a build up of painful or irritated energy.Blue Lace Agate  balances emotions and calms the mind.
BOTSWANA AGATE
Used with high-pressure oxygen therapy, smoke inhalation, protection, increases physical strength, enhances stamina and endurance, protects sensitivity when weak