one's actual depth of color. Transmitting light with no distortion, transparent. Grading in the setting. The cobalt coated Tanzanite has a low tolerance to ultrasonic cleaning, and should not be cleaned using this method. Tanzanite is a very rare gemstone that is only found in the country of Tanzania. Originally discovered in 1967. Tiffany & Company, named the stone Tanzanite. It is found in the Usumburu Mountains that border the Umba Valley of northern Tanzania. Tanzanite occurs in gray, brown, violet, blue, reddish-purple, & green. The gem is interesting because of its exceptional pleochroism. Rotated in different directions a tanzanite will exhibit multiple changes of color. Seventy-Eight bead set round brilliant cut diamonds approximate total weight of 78 Stones = 0.32ct. Graded in the setting. Clarity: I-2 to I-3. Color: G - I. Total Weight of Colored Stones 2.36ct. Total Weight of Diamonds 0.32ct. Total Weight of Earrings 7.05gm. WJA Appraised.