October birthstone opal or tourmaline
Zodiac sign: Scorpio
Anniversary stone: 14th anniversary (opal)
Anniversary stone: 8th anniversary (tourmaline)
Month flower: Hops
Hindu month gem: Coral
Meaning of dreaming with opal: "Great possessions"
Meaning of dreaming with tourmaline: "An accident"
For more information about the history of birthstones, try The Curious Lore of Precious Stones by George Frederick Kunz, a fascinating compendium of all the powers that have been associated with gemstones through the ages.