Silver Round Cluster Pendant with Tanzanite and CZ'sTanzanite & CZ Cluster Pendant Crafted from gleaming 925 sterling silver, this pendant showcases a captivating round tanzanite, a gem as rich and blue as a twilight sky. It's a stone particularly special to those born in December, as tanzanite holds the honour of being their birthstone. Enhancing the central tanzanite's vibrant hue is a halo of sparkling cubic zirconias, adding a touch of extra brilliance and fire to this elegant piece.