A mid 20th century old-cut diamond bicolour ring

Estimated diamond weight 0.65ct, H-I colour, P1 clarity.
Ring size T1/2. 7.6gm.

Condition Report:
Surface scratches and minor marks.
Discolouration.
Band split to the back of the band.
Diamond appears fairly bright.
0.8cm.
Electronically tests to yellow metal as approximately 16-17ct gold and to white metal as silver.
Fellows uses a Thermo Scientific Nitron Handheld XRF Analyser to test metals. This technology is limited to examining metal to a depth of approximately 8 microns.
Fellows does not guarantee the standard of gold or platinum unless an item is hallmarked. Results from electronically tested items should only be used as a guide and with caution, as false readings are possible.
Free virtual viewings are available by appointment. Please email jewellery@fellows.co.uk for more information and to book an appointment.
Condition reports are offered as a guide only and we highly recommend inspecting any lot to satisfy yourself as to its condition.
For any further questions you may have on this lot, please do not hesitate to contact Ben Randall at ben@fellows.co.uk