central round faceted sapphire within a cut down setting, 3.8mm, surrounded by a circular border of seed pearls and four crossover sections of round faceted sapphires and pearls, further set with seed pearl fleur-de-lys at cardinal points, plain bale, length including bale 3.5cm, width 2.8cm, unhallmarked, stamped '15c', on a curb link chain, length 55cm, magnetic clasp together with three bolt ring clasps, London import marks for 18ct gold, gross weight 22.6g