A late 19th century coral, pearl, diamond and enamel bangle, by John Brodgen

A late 19th century coral, pearl, diamond and enamel bangle, by John Brodgen
The broad hinged bangle decorated with black enamel lines set to the front with three oval coral, corallium rubrum, between rose-cut diamond dividers, to half-pearl panel shoulders in black enamel frames and claw-set pearl three-stone sides, circa 1870, inner diameter 5.6cm
Maker's mark JB