Yellow gold, pearl, sapphire and diamond necklace

White cultured pearl necklace with an 18k yellow gold (750/1000) pendant. 64 white pearls. Pearl diameter: 6.4 mm. One oval-cut sapphire of approximately 0.33 ct, surrounded by 21 brilliant-cut diamonds (each diamond weighing approximately 0.01 ct). Total diamond weight: 0.21 ct. Length: 42 cm. Total weight: 26.68 g. Owl hallmark. Excellent condition.