15K Reverse carving and painting Horse carriage Split seed pearls brooch JR9986

This is a late 20th century 15K yellow gold brooch, crafted in England. The brooch has clear crystal glass in the center which is in reverse carving and painting, 15.57mm a diameter, it depicts a couple riding in a carriage with two horses. The brooch has a filigree frame with floral decoration, pasted with split cultured seed pearls. The brooch is 1.5", weight 9.5 grams, no hallmark, tested for 15K