Your bowl looks a lot like the work of Archimede Seguso. They did many ribbed pieces with this type of rim. Your bowl reminds me of the basket that is on page 30 of Pina's Archimede Seguso. The color and ribbing are very nice. The bowls appear to have gold, but not polveri.
I have seen several pieces for sale lately that are described as polveri, but appear to be blown with gold foil or peppered with gold. This confuses me, because I am not sure I have a good grasp on the concept of polveri. Pina refers to the polveri A. Seguso pieces as sfumato in her book. My idea of polveri is that it is powder made from pulverizing materials such as colored glass. My idea of sfumato is that it is a way of shading colors together so that there are no distinct borders between the two colors. The polveri pieces I have seen by A. Seguso have all been sfumato (using my understood definition of the terms), using a combination of red, green, blue, and gold. I am not sure if the gold is polveri in these pieces. Maybe one of the people with experience in technique will know.
Anyway... my impression is that your bowl looks like it could have been made by A. Seguso, but that it is not polveri. It is a pretty bowl, whatever the technique.