Here's what know about December's birthstones. December has three birthstones: tanzanite, turquoise and zircon. Of the three, tanzanite is relatively new to the world of gems. According to the ...

Sagittarius: Topaz (November), Citrine (November), Tanzanite (December), Turquoise (December), Zircon (December) Sagittarius boasts the most possible birthstones of any star sign, with five in total.