Close-up of an 18k yellow gold necklace with a blue zircon and round brilliant cut diamonds.

December Birthstones: Zircon & Tanzanite

December has two birthstones – Zircon and Tanzanite. Zircon comes in various colors, but blue is the most popular and is believed to promote wisdom and prosperity. Tanzanite, a relatively recent discovery, is prized for its deep blue-violet hue, symbolizing transformation and spiritual growth.