Vintage 14K gold filled minimalist necklace with natural white pearl

Vintage / antique 14 karat gold filled necklace. Victorian (?) style. Stamped 1 / 14K GF on the pendant and also has a makers mark. The central part of the pendant has a brushed surface, as part of the design. The pearls looks round and uniform, possibly a South Sea saltwater pearl, but can't say for sure. 15" chain. 1.5 cm pendant. Gold filled vintage jewelry is considered valuable and collectible as it tends to be of better quality and also contains quite a bit of gold.