Turquoise and Tanzanite

All of December’s birthstones are best known for their beautiful shades of blue. These gemstones range from the oldest on Earth to one of the first mined and used in jewelry, to one of the most recently discovered.
December’s birthstones are relatively inexpensive, but their beauty rivals even precious gemstones. Tanzanite often substitutes sapphire, and turquoise is unmatched in its hue of robin’s egg blue.