I've done some looking on the net collecting meanings for some of the more common gemstones I use in my jewelry. I find it interesting, but it's not something I take too seriously. I'll add more tomorrow or the next day.
Agate: Strengthening on the spine and heart. Creates a contact between the heart and soul. Enhances negotiation skills. Agates attract strength, and protect from bad dreams. It also protects from stress and energy drains.
Amazonite: A stone of transformation, makes the rigid flexible and the narrow-minded open. Known to have healing powers for arthritis patients. Amazonite balances feminine and masculine energy. It promotes kindness and practicality. It is an excellent stone for artists and for men.
Amethyst: A stone of faith. Increases trust in yourself and others. Protecting and cleansing on body and soul, helps you to make the right decisions. Known to have healing powers for dependency, addiction, headaches and skin problems. Amethyst is a gemstone often worn by healers, as it has the power to focus energy. Amethyst is used for problems in the blood and in breathing problems. Amethyst crystal clusters are used to keep the air and life force in the home clean and positive.
Citrine: The scholars stone. Clears the mind, soothes the nerves and increases self-discipline. Promotes family connections. Citrine is known as the lucky "Merchants Stone". If you are in any type of sales, just put a citrine in the cash drawer and watch what happens.
Crystal: Gives insight and clarity, produces harmonious vibrations in a room. Creates closeness the spiritual world. Crystal is a common stone, but a powerful one. It is mainly used in healing as amplification for the energies of the other working stones. Crystal has a similar vibration as humans, which is why using Crystal to meditate helps one to know oneself. It will sometimes not work for a negative person.
Fluorite: Enhances managerial and organizational skills and increases concentration. Fluorite is known as the "Genius Stone". Fluorite is also said to absorb and neutralize negative vibrations.
Garnet: Helps focus on the positive, see the light at the end of the tunnel. Gives insight to reincarnation and spirituality.It is believed that if a garnet is put under a pillow it will cure depression. Garnets can be used to make a person popular and have self-esteem when worn as jewelry. It helps protect one on trips. Garnets bring constancy to friendships. Garnets are also known for stimulating success in business.
Hematite: A strengthening stone. Creates and improves stamina and self-control. Stops bleedings and known to cure insomnia.It is also used to improve relationships. If you need your personal relationship to be better, carry a hematite with you always.
Jade: Jade was used by the Indians in Mexico for medicinal purposes to relieve and treat kidney pains and ailments. Jade is an ancient stone that has historically been used to attract love. Jade is also a protective stone, guarding against accidents and misfortune.
Jasper: Strengthens spirituality and peacefulness. Jasper has been used for ages on pregnant women and patients with epilepsy. Jasper comes in many colors. All colors of Jasper will help balance the vibrations of the body. Jasper is slow to show a change to the person, but is such a basic "good" stone that one should always have it on hand.