Diamond pendant necklace, circa 1810; designed as an intertwined line of openwork foliate scrolls between half round split connector links embellished with old-mine cut diamonds supporting a detachable pendant terminating on an openwork cluster supporting a pear shaped rose-cut foiled back diamond swing drop, the diamonds together weighing approximately 18.00 - 19.00 carats, mounted in silver and 15ct gold, inner circumference 350 mm, pendant length 70 mm, total gross weight approximately 76 grams.