This is possibly a Fulvio Bianconi for Venini turquoise threaded glass vase. 13.5” not signed.
The vase features applied glass lines, often referred to as "threading" or ritagli.
The technique was developed by master glassmaker Fulvio Bianconi in the mid-20th century.
The piece is a hand-blown art vase, likely dating to the 1970s.
It is a collectible item of Murano art glass from Italy