Three gem-set clasps, comprising: a clasp of cluster design, set with brilliant-cut and baguette

Three gem-set clasps, comprising: a clasp of cluster design, set with brilliant-cut and baguette diamonds and marquise-shaped rubies, mounted in white gold, 1.9cm diameter, stamped 750, maker's mark BN; an oval clasp set with oval rubies, mounted in silver, length 3.3cm; and an Indian clasp set with carved rock crystals backed with red and green foil, and lasqué-cut diamonds, the reverse with floral designs in multicoloured enamel, length 3.2cm