A GROUP OF FOUR DIAMOND AND GEM-SET RINGS The... Lot 195

A GROUP OF FOUR DIAMOND AND GEM-SET RINGS The first one set with an old-cut diamond, mounted in 18K gold, the second set with an old-cut diamond within an openwork mount, mounted in 18K gold, the third set with a faceted onyx, to old-cut diamond quarters, mounted in gold, the fourth set with rose- and brilliant-cut diamonds, applied with blue enamel, mounted in gold, ring sizes J½, N, I½ and N½