The December Birthstone is Turquoise
The traditional birthstone for December is brilliant blue Turquoise and the December birthstone color is blue. There are in fact three official December birthstones – Turquoise, Tanzanite and Blue Zircon, with Blue Topaz as the alternative December gemstone.
Topaz is the main Zodiac birthstone for Sagittarius (Nov 23 – Dec 21) and Turquoise is one of the secondary stones. Ruby is the primary birthstone for Capricorn (Dec 22 – Jan 20). Other birthday symbols include the birth flowers for December which are the Narcissus (Daffodil) and the Poinsettia.