I think the gold parts are actually coated with real gold. In the middle of the photo is a small dish of rice, replaced with fresh rice frequently.
Camera model SGH-T999 Shutter speed 1/15 Aperture f/2.6 Maximum aperture f/2.8 Exposure bias 0.00 Exposure Aperture priority Exposure index 0.0 Focal length 3.7,mm Distance 0.00 m Light source Unknown Flash Off Metering CenterWeightedAverage ISO sensitivity 800