If there’s one color that’s trendy among smartphones right now, that would be gold. LG, HTC, and Samsung have all already announced gold-colored variants of their flagship handsets after Apple kickstarted the trend with its iPhone 5s. However, did you know that there was actual gold inside of all smartphones? The shiny metal is primarily used for the wiring inside of chips due to its excellent conductivity and malleability properties. These allow it to conduct signals very effectively across the incredibly thin chip wiring. Furthermore, gold isn’t the only precious metal that can be found inside of most smartphones and tablets. Silver and platinum are also used in smartphones, along with a number of rare and hard to obtain metals.