An amethyst and diamond pendant and chainThe pendant with central claw-set oval-cut amethyst, measuring approximately 26.2 x 22.1 x 15.7mm, within an illusion-set border of round brilliant-cut diamonds, length approximately 37.5mm, width 26.40mm, stamped '18CT', estimated total diamond weight approximately 1.00ct, suspended from a 9ct gold belcher-link chain, length approximately 62cm, British hallmarks (2)