The word Agate comes from the Greek name for a stone originally found in the Achates River in Sicily (currently known as Drillo River). Agate has been found with the remains of Stone Age man in France from as early as 20,000-16,000 B.C. and the Egyptians used agates prior to 3000 B.C. for talismans, amulets, seals, rings and vessels. Early civilizations used eye beads to protect them from evil and bring good luck.

Agate is very stabilizing to the aura, and helps to bring about mental, physical, and emotional balance while balancing yin/yang energies. It is a great stone to help one achieve self-acceptance, building self-confidence to follow your true path, while helping you to trust your intuition to get there.  They also help to overcome negativity, releasing anger from the heart chakra to see, speak, and achieve your own truth, ridding your soul of emotional disease.

Agates are great stones for protection and are among the oldest of good luck stones.

Birthstone

Taurus – Apr. 20 – May. 20

Chakra

All agates can remove blockages from any chakra.

Healing Properties and usages

Agate is said to have mystical powers to guard one against danger, to cure insomnia, to ensure pleasant dreams and to help with clarity enabling one to see the world through a broader perspective. It attracts good fortune, increases concentration and promotes good will. Agate is reported to be an aid in overcoming flaws, fears, and loneliness. It is believed to remove curses and spells and helps to eliminate bad luck. Many believe that agate has a calming effect during times of stress and that it gives a sense of strength and courage. It is thought to stimulate fertility and to be advantageous in relieving bone marrow ailments and allergies. Artists and writers have used agate to enhance creativity.
Because agate has been known and regarded around the world for thousands of years, its beneficial and healing properties are diverse and almost innumerable.
It bestows courage, energy, and strength upon your shoulders, as much as it dispels fears and increases your self-esteem.
On the level of the physical body, agate can help with teeth problems, it can enhance your sight and protect you from the harmful environmental EM irradiation (such as the one coming from computers, TV, cell phones). Agates are believed to promote long life and abundance, and equally protect against headaches and skin diseases.

Meditation

Agate strengthen the body and the body's connection to the earth. It also increases energy. Agate is used in crystal healing for healing of all kinds by bringing the elements of the healee into harmony. 
Agate can cleanse and stabilize the aura by removing and/or transforming negative energy.

Zodiac

Gemini

Daily usage

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 is a very protective stone. It is especially protective for children, and makes an excellent stone for children's amulets, medicine bags, jewelry, or just to carry around in a pocket