Fluorite
Fluorite promotes spiritual and psychic wholeness and development, truth, protection, and brings peace. It protects psychically and in the physical realm. It helps one meditate and learn to go past the "chatter" that our minds tend to generate when first learning to meditate. It can help get rid of mental blocks and similar mental issues. Physically it helps general health throughout the body's main skeletal and muscular systems. All colors are also good for auric cleansing. Mixed colors bring enhanced protection in the areas enhanced by all combined types. Clear fluorite guards against psychic attack and strengthens consciousness. Blue fluorite has the quality of protecting the emotions and restoring emotional balance. Purple fluorite strengthens mystical insight, psychic awareness, and can open the third eye. Green fluorite is an excellent all purpose healing stone that promotes healing on all levels. It also promotes self-love. 
Fluorite, Blue John (aka Blue John)
Blue John is fluorite from the Blue John cavern in Derbyshire England. It comes in striped colors of mainly purple-red, dark blue, and yellow, which makes it name seem a bit odd to be called Blue John. The name supposedly comes from what the French miners of the past called it “bleu-jaune” meaning blue-yellow. It’s reputedly the most expensive and prized fluorite in the world. Roman legend says that drinking alcoholic beverages from cups or bowls of blue john kept away drunkenness. Metaphysically, Blue John does have the properties of fluorite in general. Additionally, it is especially good for bringing succor and relief to sensitives and mediums who give too much or take too much in. It is said to bring renewal and energy, as well as strength, health and well-being. Blue John is said to be a catalyst for personal growth, encouraging experimenting, exploring, and understanding. It is a strong teaching and learning stone because of this. It is reputed to work very well with Magnetite for aligning the spine in polarization. Blue John is primarily related to the third eye and crown chakras with the solar plexus chakra tied in.
Fluorite, Yttrian (aka Yttrium Fluorite, Lavender Fluorite) 
Yttrian Fluorite, also called Yttrium Fluorite or lavender fluorite is an unusual form of purple fluorite. It is a stone of manifestation which is said to help ground the ideas of philosophers, thinkers, and dreamers by manifesting their plans. It is said to make ideas come to life, and is a stone that is thus said to bring self-fulfillment and self-actualization. We all have a little bit of the dreamer in us, so it's easy to see that these energies could be used by all. Yttrian fluorite's mystical energies are said to increase weath and mental prowess, too. It is often used by those in service professions, as the manifestation energies are in great need there. Its mystical energies of making complex ideas and thoughts understandable by most anyone can also be extremely helpful. Yttrian Fluorite is also said to bring serenity and peace by calming the mind. It is used to enhance intuition and bring clarity to psychic readers and clairvoyants. Yttrian fluorite is related to the heart, third eye and crown chakras.
Fossils
Fossils can help increase accomplishments in the area of business and add excellence to one's environment. They also aid one in being open to change and new ideas. Traditionally, fossils have been used to aid in curing diseases and ailments of the skeletal system, bones, hands, and feet.
Fulgurites (Fulgerites) 
Fulturies are natural glass, usually tubular, formed by lightning strikes in sand or rock. Fulgurites are high energy formations do to the nature of their birth. They are particularly noted for their ability to channel and direct energy. Fulgurites have been used to communicate with aliens and entities, or ascended beings in the spirit world. They are often used for clairaudience. Fulgurites are also used to enhance communication in the physical world, and are used as stones of leadership. Fulgurites are used by Native Americans to bring rain (cloud-busting), and as charms for protection from lightning. Weather-changing of any sort is not recommended, however, unless, as with the Native Americans, one have an exceptionally good sense of the balance of Nature. Physically, fulgurites are used in crystal healing and folklore in treatment of the immune system, ear, nose, and throat ailments, sight, thymus, tumors, growths, and colon.
Fuschite
Fuschite is a type of green mica. It is sometimes called the "stone of health" in part because it can help access information on health. Fuschite can also help one bounce back after emotional or physical problems. It can also help get information on daily routine, stress, pets, and career. Fuschite also can bring friendliness, compassion, and lightheartedness. It is said to speed deep healing by assisting with recovery and immunity. It also increases energy transfer when multiple stones are used for healing.