Opaline for suspension

This glass is made of opaline in the shape of a lace bordered with a caramel ribbon in the murano style. I recovered it from my grandfather's garage, who repaired light fixtures and had all sorts of spare parts for this. It is old because you can see some bubbles in the glass. The total diameter of the object is 23 cm, the upper opening is 7.70 cm and the height is 15 cm.