Antique ruby and pearl ring, a navette ring hallmarked 15kt gold

An antique 15 kt gold ring, Navette in shape with detailing on the shoulders that divides on each side. 

Measurements and markings:
The ring is hallmarked 625 for 15kt gold, two of the other hallmarks are illegible however the date letter indicates 1800's. The item weighs 3.49 grams. The three rubies are rough cuts 1mm - 2.5mm and the pearls approximately 1mm. Ring size 6.5/M rings can be re-sized.

Condition:
The ring itself is in good condition, the pearls are all differing shades and one has been replaced.