Pearl necklace and green beryl pendant/brooch, circa 1840, composite; designed as a collar comprising three strands of 126 round Akoya cultured pearls measuring 8.00 mm to 7.50 mm, terminating in 14ct gold connectors centring a detachable clasp collet-set with an oval-shaped green beryl weighing approximately 168 carats, bordered by engraved heart and auricular motifs, mounted in 20ct gold with a 9ct gold pin, with connectors to convert to a brooch/pendant, inner circumference 400 mm, pendant length 65 mm, pendant width 60 mm, pendant total gross weight approximately 59 grams.