Stud earrings 'Hearts' with tanzanites and diamonds together ca. 3,5 ct,

Earrings 'Hearts' with antique faceted tanzanites totalling ca. 2.8 ct, slightly abraded, surrounded by 3 rows of ca. 168 brilliant-cut diamonds totalling ca. 3.5 ct, ca. RW-WHITE (F-H)/VS-SI, 18K yellow and white gold, 22.6 g, 2.7x2.8 cm, 20th/21st century, good condition, marked 'Laich', elaborately handcrafted.