I found this image from last summer. There is a similarity, at least to my eye, and I have no doubt that these are approx. 1920s Venetian beads. I only wish I had a necklace full of them. And, bead #1370 in Picard vol. 5 shows a related bead. That one is a long elipse, half blue, half white. The blue is swirled over the white, and has little lampworked florals. It is described as from a Venetian collection.