Antique Old Cut Diamond Rivière Necklace 16inch long 16cts set in Silver & Gold

Antique Old cut Diamond Rivière necklace 
Set in Silver & 9ct Gold
Total carat weight 16cts
Cut down collets
Open back
Clasp with safety chain
Principal central diamond size 0.7cts approx
Retractable hanging loop on central diamond to hang pendants 
Diamonds G-H colour vs-si clarity
16inch : 40cm original length
36.2g
In Ogden of Harrogate necklace pouch
Independent Jewellery report included