A gold garnet set rivière necklace

A gold garnet set graduated rivière necklace,
possibly c.1880, with a series of graduated octagonal step cut garnets, each one crimp set in a shallow collet with a twisted wire border. Each collet with a hollow bead at each side, joined by jump rings to a chased barrel clasp. Tested as approximately 9ct gold. 360mm long, 16.80g. A later case by Cameo Corner Ltd.
Sold for £650

Condition report:
The clasp, although period may not be original to this necklace. The jump rings at each end are later replacements.