Beautiful antique set

Bundle of antique jewellery consisting of cross pendant 8K yellow gold, 3.4 g, needle with pearls and rose-cut diamonds and nice crafted safety catch, ca. 15K yellow gold, face side platinum, 2.8 g, double needle with rose-cut diamonds ca. 12K yellow gold, connecting chain from later times 14K yellow gold, 2 g, safety catch of metal, around 1900-1920, age-relating good condition.