While Turquoise and Lapis Lazuli are the traditional birthstones of December, the modern list includes Tanzanite, Blue Topaz, and Blue Zircon.

Zircon colors include many colors, such as yellow, orange, green, red, and colorless, but blue stones are the official stones associated with December. However, you can choose any color you like.

Some people believe that Zircon is associated with serenity and purity, can relieve pain, increase the wearer's appetite, and that Tanzanite facilitates higher consciousness, intuition, and awareness. These blue gemstones are also said to bring calmness to the wearer.