Two women at the lake Carnelian 3 levels shell circa 1865 Huge filigree Pinchbeck/ Gold filled Brooch/Pendant

Quality Antique Sardonyx shell scene of two woman walking in the water. Huge Pinchbeck in the Gold(?)/Gold plated Brooch/Pendant filigree setting. No marks - which is common for that time. Measurements - 2 ” by 2-3/4” (50 mm. by 70 mm.). The perfect condition from the UK private collection. Weight is 15.8 grams. Circa 1865.