Necklace and pendant with diamond

Nacklace and pendant with brilliant-cut diamond ca. 0.03 ct, good colour and clarity, 14K yellow gold, 5.7 g, chain: L: ca. 40.5 cm, W: ca. 0.06 cm, pendant: L: ca. 1.3 cm, W: ca. 1.5 cm, 21st century, minimal signs of wear, with hallmark.