Crispin Jewellery has dated this piece to the Edwardian era.
A Victorian diamond brooch: designed as a single bloom.
HALLMARKS
Not Hallmarked but tests as 18ct minimum with the diamond most likely set in Silver

MEASUREMENTS
Central old cut diamond; 5.5mm, estimated total carat weight 0.60ct. Clarity Si3-P and colour K-L in situ, there are a few very very tiny carbon flecks
Further old cut Diamonds; Approx 3.5mm.

Rose cut diamonds 2.5mm
Total diamond weight approximately 3.00ct
Brooch diameter; 32mm
The brooch has a good functioning c clasp, as mentioned the brooch mechanism can be unscrewed to convert to a pendant if a bale were added
WEIGHT
11.2g
CONDITION
Good condition, an excellent piece. A very high quality piece.
This will have a considerable insurance valuation
THIS REALLY IS FAR BETTER THAN THE PICTURES DEPICT
Crispin Jewellery has dated this piece to the Edwardian era.
You can view the stock and full dealer information on the Crispin Jewellery Profile Page