The modern birthstone(s) for December are Tanzanite, Turquoise, Zircon. Traditional birthstone(s) are Turquoise, Lapis Lazuli. Zultanite — gem-quality color-change diaspore from Türkiye — is not an official December birthstone.

Modern birthstone

The modern December birthstone list, established by the American National Association of Jewelers in 1912 and updated periodically since, includes: Tanzanite, Turquoise, Zircon.

Traditional birthstone

The traditional birthstone list (drawing from older European and Polish gem-month associations) for December includes: Turquoise, Lapis Lazuli.

Where Zultanite fits

Not an official December birthstone. December birthstones favor blue tones; Zultanite’s palette (sage-gold-raspberry) does not overlap with the December set.

How birthstone lists work

There is no single global authority on birthstones — modern, traditional, mystical (Tibetan), and Ayurvedic lists all differ. Zultanite was discovered too late (commercial production began in the early 2000s) to enter any of the historical lists.