A Victorian pearl and ruby cross

A Victorian pearl and ruby cross, the body and arms of the cross set with twelve half pearls embellished with four rubies, on chain with pearl and ruby flower slide, all in yellow gold, bearing the owl hallmark, French hallmark that was struck in jewelry in finished condition that were brought to be examined by the French assay office, therefore one cannot be sure of the origin of a piece of jewelry with this hallmark, circa 1840 Gross weight 11.47 grams

No. 23330M