Here is a MURANO Sommerso Aventurina Venetian Glass Bead Necklace.  

Sommerso Venetian glass beads are named after the technique which submerges fragments of different colors beneath the clear glass added with Aventurina which are sparkling copper crystals.

In very nice condition.  I do not see any chipped or cracked beads.  The filigree end caps are in good condition and not tarnished.  Measures: 23" long; beads about 1/2" across.  

Thanks for looking!