Three assorted flexible link hardstone bracelets

Three assorted flexible link hardstone bracelets, including an early 19th century rectangular gilt plaque bracelet, collet set with seven hardstones including carnelian and banded agate, gilt surround with scrolling decoration, 18cm long, a 19th century bloodstone- plaque bracelet, each separated by a conjoined double scrolling gilt wirework link, length 17.5cm, and a mixed onyx octagonal plaque hardstone bracelet with gold mounts, 19cm long