Diplomatic Solution

dull gold texture with patches of reddish-brown rust and darker areas of corrosion. Use a noise map to create random rust spots and streaks, and mix in patches of greenish patina and oxidation along the edges and crevices. Add roughness to the surface, with faded shine and scuffs. Use a combination of bump or normal maps to simulate erosion, along with a layer of moss or algae growing in the cracks. For the organic growth, texture it with moss or lichen, incorporating rough, uneven surfaces