Blender 3D: Noob to Pro/Every Material Known to Man/Gold
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[edit] Gold 1
One of the gold formulas.
Alpha: 1.0
Color: R=1.0 G=0.836 B=0.386
Reflectivity: 1.0
Specularity: 0.75
Hardness: 180
Translucency: 0.50
Ambient: 0.50
Emit: 0.300
Raytracing
Ray Mirror: 0.20
Depth: 2
Fresnel: 0.5
Fac(tor): 2.20
[edit] Gold 2
After several hours of experimenting, a beginner alchemist created this better alternative formula:
Material
Col: R=1.00 G=0.88 B=0.25
Spe: R=1.00 G=1.00 B=1.00
Mir: R=1.00 G=0.88 B=0.25
A: 1.0
Mirror Transp
Ray Mirror: On
RayMir: 0.50
Shaders
[Lambert] Ref: 1.0
[Phong] Spec: 2.0
Hard: 75
Amb: 0.043
Make sure you have "Ray" enabled (Scene (F10) > "Render" box > Ray) or else it won't reflect light.
Looks good with a Sun lamp as a light source
[edit] Gold 3
Gold 3 was mentioned as looking more like "Polished Brass" and was moved to the "Brass" Section.
[edit] Gold 4
This is also kind of like brass, some what old and worn. To tweak it more you could add a brownish color, or make the specularity more reddish.
"Material" tab
Color: R 1, G .954, B .392
"Shaders" tab
Reflectivity (Lambert): .843
Specularity (Blinn): .5
Hardness(Blinn): 16
Refr (I think this value is "refraction") (Blinn): 5.575
Translucency: .26
Ambience: .183
Emit .072
"Mirror Transp"' Options:
Raymir: enabled, .07
"Map To" tab
Nor: enabled, .50
"Texture" Window
Texture Type: Clouds
"Color" tab
Right Side Color: R .915, G .876, B .394
Left Side Color: Black
Left Side Alpha: 0
By left/rightside I mean the colors and alpha located on these two parts of the nodes window. Image shown here: 
[edit] Gold 5
Based on material "Gold 3" with some tweaks to be done to make this material look more goldish. Base setup is taken from the release Notes ([1]).
You should to take this material as a base and study throughly how textures are setup, because without them it looses 50 percent of its convincing look.
Material
Col: R=0.912 G=0.782 B=0.082
Spe: R=1.00 G=0.913 B=0.8
Mir: R=0.857 G=0.90 B=0.70
A: 1.0
Mirror Transp
Ray Mirror: On
RayMir: 0.40
Shaders
Diffuse Shader:
[Oren Nayar] Ref: 0.8
Rough: 0.9
Specular Shader:
[Phong] Spec: 1.4
Hard: 20
From those structure textures (voronoi) I suggest to suppress normal-mapped to the range 0.1-0.3.
