ITEM DESCRIPTION AAA+ grade Natural Tanzanite 4 mm loose Beads Strand Faceted Tanzanite Roundels. Here we offering Tanzanite Beads Loose strands in different length (4 - 16 inches).You can choose as your needs. These are natural & genuine Tanzanite. beads are approx 3.50 - 4 mm. Excellent cut and clean gemstone beads.