A diamond 'Serpent' ring, by Repossi, and a turquoise and diamond dress ring

A diamond 'Serpent' ring, by Repossi, and a turquoise and diamond dress ring
One ring of scroll snake design pavé-set throughout with brilliant-cut diamonds, signed Repossi, finger size L½; the other set as an oval cabochon turquoise to a diamond-set gallery of palmette design, finger size L
One ring signed Repossi, with maker's mark R (2)