An astounding 31.24-carat cushion-cut tanzanite is set in this pendant. The gem displays a highly saturated "bluish-violet" hue as stated in its certification from the Gemological Institute of America (GIA). Its suspended form is encased by a halo of white diamonds, which total approximately 3.10 carats. Set in 18K white gold. When discovered in the hills of Mount Kilimanjaro in 1967, tanzanites were first thought to be an alternative type of sapphire. Upon further investigation, however…