December's birthstones are blue topaz and turquoise.
Topaz occurs in a range of colors, from a yellow and pink, to blue and green. Topaz is found in igneous rocks such as granites and volcanic lavas, or as water-worn pebbles.
The name is said to derive from the Sanskrit word for fire, 'tapas.'
Prized since remotest antiquity for its superb blue color, turquoise is known to have been worn by the women of ancient Egypt. The name means "Turkish stone," because the trade route that brought it to Europe came through Turkey. Its rich color is ascribed to copper, while the presence of iron introduces the greenish cast. Some of the world's finest turquoise comes from Iran (formerly Persia.) The U.S. is alos a major source.
In ancient times, it was thought to possess magical powers and today it is said to bring success in love and money.