CARNELIAN
SCIENTIFIC INFORMATION: Carnelian is the clear red to brownish red member of the Chalcedony family. It is a microcrystalline variety of Quartz (Silicone Dioxide) and may contain small amounts of iron oxides. The hardness is 7, and the streak is white.
ENVIRONMENT: Chalcedony is formed in several environments, generally near the surface of the earth where temperatures and pressures are relatively low. It commonly forms in the zone of alteration of lode and massive hydro-thermal replacement deposits and as bodies of chert in chemical sedimentary rocks.
OCCURRENCE: Fine carnelian comes from India and South America.
GEMSTONE INFORMATION: Carnelian is used as an alternate birthstone for the month of May. It is normally cut into cabochons, engraved, or made into seal stones or rounded, polished, and pierced for necklaces and other items of jewelry.
NAME: The name means "flesh-colored", from [caro], meaning "genitive" and [carnis], meaning "flesh".
LEGEND and LORE: Carnelian has long been associated with courage and cleansing of the blood. It was believed that the stone would improve one's outlook, making the individual cheerful and expelling fears.
MAGICAL PROPERTIES: Katrina Raphaell says that Carnelian can be used to "see into the past". The "Crystal Oracle" says that Carnelian refers to the Self, and Current Conditions. It is a grounding stone, and associated with the Earth. As such, it is considered practical, sensible and balanced. Cunningham associates the stone with the element of Fire. He suggests it as a talisman against Telepathic invasion.
HEALING: It is recommended for infertility or impotency. In addition it is used for purification of the blood. It has also been suggested that this stone will stop nose bleeding.
PERSONAL EXPERIENCE: I call this the "sexy" stone...since I believe it stimulates sexual appetites. I use it in the lower Chakras for infertility and impotency for men (I use Coral as the feminine counterpart.) I always get a good chuckle when I notice a man wearing a LARGE Cornelian belt buckle. In addition, I would use this stone for relief of pain from arthritis in men.
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1. Scientific, Environment, Occurrence and Name are from (or paraphrased from) "The Audubon Society Field Guide to North American Rocks and Minerals".
2. Precious and semi-precious gemstone information may come from "Gemstones" by E. H. Rutland.
3. Other Precious and semi-precious gemstone information may come from "Gem Cutting", sec. ed., by John Sinkankas.
4. Legends and Lore, Magical Properties are from "Cunningham's Encyclopedia of Crystal, Gem & Metal Magic", by Scott Cunningham.
5. Some of the healing information may come from "Color and Crystals, A Journey Through the Chakras" by Joy Gardner.
6. Some of the healing information may come from "A Journey Through the Chakras" by Joy Gardner.
7. Personal Experience is from MY personal experience, journals and notebooks, by Tandika Star.
http://www.wicca.com/celtic/stones/stonea-e.htm 
