Necklace, curb chain with 3 diamonds

Necklace, curb link chain with 3 brilliant-cut diamonds totalling ca. 0.60 ct, ca. RW (F-G)/VS-SI, 18K yellow gold/white gold, 63 g, L: ca. 45 cm, W: ca. 0.6 - 1 cm, late 20th century, minimal signs of wear.