Tanzanite Pendant with Diamonds, 14K Gold Jewelry Due to its unique lavender - blue - purplish glow, tanzanite has become one of the most sought after gemstones of late. The pendant showcases a genuine individually prong set 5 X 3mm pear shaped tanzanite gemstone, accented wonderfully by 12 white round diamonds. The pendant is set in 14KT polished solid yellow gold. Chain sold separately. This piece is sure to bring a smile!