Three ring mounts, including a cluster setting with an oval...

Three ring mounts, including a cluster setting with an oval surround of old circular-cut diamonds in silver on gold, the centre cut-down collet for a cushion-shaped stone, collet dimensions approximately 7.6 x 6.5mm, ring size N 1/2. A cluster ring mount with geometric surround set with calibre-cut emeralds, with old circular-cut diamonds to the shoulders in platinum, the centre collet for a hexagonal-shaped stone, collet dimensions approximately 7.3mm (facet to facet) or 8.1mm (corner to corner), ring size M, together with a crossover ring mount, with two four-claw settings for round stones on textured yellow gold band, size I