Antique Art Nouveau gold diamond pendant

A very pretty and stylish Art nouveau pendant, depicting a lady in profile, set with three rose-cut diamonds.

The finer details:

Metal: No Hallmarks, testing as gold.
Dimensions: Pendant length (including surmount): 2.5cm. Pendant width: 1.6cm
Weight: 2.3gm.
Condition: Good vintage condition. Light surface scratches, in keeping with age.