Set of pendant and ear studs with white opals encrusted with diamonds

Set pendant and earrings with white oval opals surrounded by brilliant-cut diamonds totalling ca. 3.2 ct, ca. STW-TIN (J-M)/VS, 18K yellow gold, 14.5 g, pendant 3.5x2 cm, earrings 1.7x1.5 cm, late 20th century, minor signs of wear.