Art Deco silver gilt marcasite and cultured pearl necklace with matching ring, Theodor Fahner, ca. 1930s

Artfully designed art deco sterling silver gilt and marcasite necklace/ choker and matching ring by Theodor Fahner. 
Necklace is made up of half-moon-shaped links with a classic art deco filigree decoration of lines and curls and set with 5 cultured pearls and marcasite.
The matching ring is S-shaped and set with marcasite and 2 cultured pearls.

Necklace measures approx. 44 cm (17 inches) long and weighs 18 grams
The ring application measures 22 x 14 mm. Ring size 55 EU (N1/2 UK) (7 US). Weight approx. 6 grams
Total weight approx. 24 grams

Set dates from the 1930s and is in very good condition. No damage.