JACOBI Folding hoop earring (one piece) with 3 brilliant cut diamonds, totalling ap. 0.12 ct, 3 round cabochons each with ruby, sapphire, emarald, D: ap. 2 mm, 18K yellow gold, 13.6 g, L x W: 35 x 7 mm, integrated folding mechanism, late 20th century, minimal signs of wear, handcrafted.