Natural Unheated Tanzanite Crystal from Mererani Tanzania – 20.69ctBeautiful natural unheated tanzanite crystal showing soft violet to blue tones with subtle color zoning throughout. The elongated crystal has a clean, elegant shape with good transparency, allowing light to pass through and highlight its natural internal features. The smaller secondary crystal growth adds extra interest and character to the piece. Tanzanite is known for its trichroic nature, often showing different colors depending on the viewing