Stunning rare shaded grandidierite bead necklace with 18KT gold/emerald accent rondelle

Stunning rare shaded grandidierite bead necklace with solid 18KT gold/emerald accent rondelle.  What a stunning strand of very rare gem!  Mesmerizing colors go from light to dark teal/gree/blues.  18Kt gold bead with emerald elevated it to a special collector piece.Gold filled findings.

Length is 16.5".