Crispin Jewellery has dated this piece to the Edwardian era.
HALLMARKS
Not Hallmarked but tested as
MEASUREMENTS
Old cut diamonds; 2mm. These are chunky bright stones with size and character variation, one does have a small chip seen under 20x loupe

These are all bright and sparkly stones, and a lovely traditional halo cluster design
Ring head; 11mm
Natural cushion cut green tourmaline; 6mm. This is a lovely deep olive green, it does have a small amount of surface wear, but beautiful colour and rare stone.
WEIGHT
3g
CONDITION
Fair condition, wear commensurate of age. A beautiful and sought after traditional design. Not a reproduction.
RING SIZE
GB N US 6 3/4
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