Gemmy Deep Color Tanzanite Crystal from Mererani Tanzania – 31.37ct

Impressive tanzanite crystal featuring rich, deeply saturated blue-violet color with a beautifully gemmy interior. This piece shows excellent transparency, allowing light to penetrate and illuminate its internal structure, giving it a vibrant and luminous appearance.

The crystal displays a strong elongated form with well-defined faces and natural terminations. From multiple angles, the color shifts noticeably—revealing flashes of deep blue, violet, and subtle secondary tones, highlighting tanzanite’s prized trichroic nature. Internal features and growth patterns add depth and authenticity while maintaining an overall high-quality look.

The saturation and clarity in this size range make it a standout specimen, equally appealing to both mineral collectors and those who appreciate facet-grade potential.

Treatment Note:
This crystal has been heated, which is the standard and permanent treatment used to enhance the blue-violet color in tanzanite.

A bold, high-impact crystal with strong color presence and excellent display appeal.

Locality: Mererani, Tanzania
Measurement: 26mm x 11mm x 8mm
Weight: 31.37 carats
Crystal System: Orthorhombic
Mineral Class: Sorosilicate