gorilla 39Limited to 500 pieces, the 39mm Nero Aurelia features a black dial with rhodium-plated hands, aluminum flange, and Viton rubber strap. Viton™, titanium pin buckle. Super-LumiNova™ filledWestern gorillas live primarily in Gabon, Equatorial Guinea, Congo, and Cameroon. Eastern gorillas live in a small range in the eastern Democratic Republic of Congo. Diet of the Gorilla.