Fire-gilding/silvering is a traditional surface decoration technique applied to ancient Chinese bronzes. In this study, digital microscopy, metallographic microscopy, and scanning electron microscopy coupled with energy dispersive X-ray spectrometry (SEM-EDX) were used to analyze seven gilt and silvered bronze coffin ornaments unearthed from the Shilipu cemetery in Xi’an. The results indicate that among the seven ornaments, only one was formed by forging, while the rest were cast. The base materials of three well-preserved ornaments were identified as low-tin bronze with a tin content lower than 7%, suggesting that low-tin bronze may have been selected by artisans for production. The presence of mercury revealed by compositional analysis, together with the surface and cross-sectional microstructures, confirmed the use of the amalgam gilding technique. The morphological characteristics of the surfaces and cross-sections indicate that surface cleaning, application of gold or silver amalgam, heating, and final polishing might have been employed for surface decoration. Moreover, three of the samples were found to be gilt prior to being silvered. This type of decoration may have been due to aesthetic preferences of the time or technical requirements in the manufacturing process.