Three gem-set padlocks, mid to late 19th century

1st: Of circular form, decorated with various gemstones, with a looping snake lock, a hinged glazed compartment to the reverse, 2nd: A heart-shaped banded agate lock, 3rd: Of oval form, set with foliate detail, circular and oval cabochon garnets, 1st: several gemstones deficient, lengths: 3.3cm, 2.9cm and 2.3cm (3)