The necklace on the definition of designer and period of manufacture.

[Svetlana-SV]

Asked to identify the designer and the period of manufacture of this necklace.Stamp 925 FB Z.

[fashion.fashoff]

This is made by Breuning, a good quality German maker.

Founded in 1927 by Franz Breuning (they use the FB mark as a tribute to him).

The type of sculptural abstract design seen in your piece is typical of their work. I own one of their pieces, pictured below. You can see the similar style.

[Svetlana-SV]

Many thanks!