Vintage 9ct Gold Ring set with Citrine, Blue Topaz, Amethyst and Green Diopside

Vintage 9K Gold Ring, set with a Citrine, Blue Topaz, Amethyst, and brilliant Green Diopside.  All in perfect condition. Clearly Hallmarked to  one side 9K confirming the Gold quality, the Makers Mark and the Anchor is visible, indicating Birmingham, UK . Dimensions approx.: Ring  size K  or  5 ¼  ; band width 1.5mm at rear to 6mm across divided shoulders; Band thickness 1mm at rear to up to 3mm at divided shoulders. England.