Vintage piece from the 80s/90s of Murano art. The cup is made of "opaline" glass which takes on the opaque light blue colour. Today it is no longer possible to produce "opaline" glass because the arsenic used for this glass can no longer be used. The cup is decorated with aquamarine threads and 4 gold lion head crests representing the Lion of San Marco. It is a collector's item with a certificate of guarantee of work performed entirely by hand according to the ancient Murano techniques.