~Rare and Ancient Blue Glass Beaded necklace~

These come to me through inheritance of an extensive collection.
 I do not know actual details of their history except that they are very fine and old.
THESE BEADS ARE COMPLETELY UNIQUE, OF VERY OLD PROVENANCE

The smallest beads measure 3mm, and the central largest bead is 12.8 mm
The necklace is 22 inches long with a fixed clasp.