Portrait of Joseph Emanuel, King of Portugal

Amaral employed Rococo characteristics, evident in the vivid color palette, intricate textures (notably the gold-trimmed red robe), and the balanced composition, which frames the king against a contrasting backdrop of a dark curtain and a glimpsed outdoor scene.

Commissioned during José I's reign, the portrait was created for the Portuguese royal court. It later entered the State Hermitage Museum's collection, where it remains on display.

As a court painter for the House of Braganza, Amaral's work reflects the artistic preferences of 18th-century Portuguese royalty, blending European Rococo influences with the specifics of Portuguese noble portraiture.

While specific impact on broader art historical movements is not prominently documented, the portrait remains a significant example of late Rococo portraiture in Portugal and a testament to Amaral's skill as a court artist.