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An early 20th century platinum, diamond and sapphire brooch

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Estimated total old-cut diamond weight 0.45ct, G-I colour, VS clarity.
Length 4.3cm. 9gm.

Condition Report:
Surface scratches and minor marks.
Discolouration at gallery and sides, possible small repairs.
Diamonds appear bright and well matched.
Individual size and setting of diamond points prevents accurate total weight, colour and clarity assessment.
Sapphires appear a deep blue through slightly greenish blue.
Brooch fittings untested.
Electronically tests as platinum.
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.
Please see the Important Notices for Purchasers for coloured gemstones.
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

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Reserve
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Time, Location
14 Oct 2026
UK, London / Birmingham
Auction House
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[ translate ]

Estimated total old-cut diamond weight 0.45ct, G-I colour, VS clarity.
Length 4.3cm. 9gm.

Condition Report:
Surface scratches and minor marks.
Discolouration at gallery and sides, possible small repairs.
Diamonds appear bright and well matched.
Individual size and setting of diamond points prevents accurate total weight, colour and clarity assessment.
Sapphires appear a deep blue through slightly greenish blue.
Brooch fittings untested.
Electronically tests as platinum.
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.
Please see the Important Notices for Purchasers for coloured gemstones.
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

[ translate ]
Reserve
Unlock
Time, Location
14 Oct 2026
UK, London / Birmingham
Auction House
Unlock