Oddly, while looking through pics of Venetian millefiori the past week, I recall noting a 7-petal flower with the same flattened, squared-off petals as the orange flowers in your beads in the right-hand picture. Of course, now that I need to re-find that particular murrine, I can't remember where I saw it.

If lightning strikes and my brain cells revive, will try to find and post a picture.