Aion Jewellery has dated these Edwardian Silver Enamel Earrings to the Edwardian era.
The fastenings are screw back and although not marked, the earrings test as silver.

Unusual and eye-catching, these are an echo of the elegant Edwardian era and their love of the natural world. Dimensions below.
Postage and packing £12.00 UK
£20.00 Europe
£45.00 USA (including 10% tariff)

£28.00 Outside Europe
Condition :- Excellent, with no dents, splits or losses. Enamel is intact.
Date :- c1910
Hallmarks :- Unmarked but test as silver.
Height :- 2 cm.
Width :- 2.5 cm. (widest point).
Depth :- 1.2 cm.
Aion Jewellery has dated these Edwardian Silver Enamel Earrings to the Edwardian era.
Specialists in 19th and 20th century jewellery.
You can view the stock and full dealer information on the Aion Jewellery Profile Page