Natural Blue Tanzanite Faceted Roundel Beads Strand Sold per 7 inch strand Inches and Size 3mm to 5mm approx.Tanzanite is an extraordinary gemstone. It occurs in only one place worldwide. Its blue, surrounded by a fine hint of purple, is a wonderful colour. Tanzanite is trichroic and exhibits pronounced pleochroism. The colors respective to the three vibrational directions are sapphire-blue, sage green, and purple.
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