AgAu Jewellery has dated this piece to the 1900s.
The chain is 18 inches long.
The Pendant is 25mm long.
The pendant as one central Garnet and a Garnet dropping from the pendant.

The chain and pendant combine weigh 4.7g
The Pendant and chain are both marked 9ct and date from around 1890-1910.
AgAu Jewellery has dated this piece to the 1900s.
Agau jewellery offer an extensive range of 9ct and 18ct gold jewellery.
You can view the stock and full dealer information on the AgAu Jewellery Profile Page