Alexandrite Graduated Faceted Rondelle Bead Strand, 4.5-2mm, 39.1 Carats 110850Faceted VERY RARE Natural ALEXANDRITE Graduated strand! This is for one 18. 5" temporarily strung strand of incredible extremely rare cat's eye Alexandrite beads. They are graduated from 2mm to 4. 2mm. The color is a beautiful opaque sea green with a blue color chatoyance! Alexandrite is said to bring light into dark areas! THESE ARE GENUINE NATURAL ALEXANDRITE !! NOTE: THE BEADS APPEAR TO HAVE TWO COLORS BECAUSE ALEXANDRITE IS PLEOCHROMATIC.