serpent applied with guilloché green enamel, the body decorated with engraved gold scrolling motifs with rose-cut diamond accents, the head set with a graduated cushion and circular-cut ruby crown within a frame of rose-cut diamonds, completed with circular-cut ruby eyes, mounted in gold, inner diameter approximately 6cm (expandable)Accompanied by a report from GCS laboratory in London stating that the rubies are natural, of Burmese origin with no indications of heating. Report no. 79208-33 dated April 8th 2019.