Jewelry is a material relic that people have used for various purposes and assigned various meanings to from the past to the present. Jewelry allows us to identify people's beliefs, cultures, social relationships, and even the technologies they used during the time they were made. With the discovery of mines and the advancement of technology, jewelry made from ready-made materials found in nature in the early periods has been replaced by precious metals, stones, and alternative materials. Gold jewelry and jewelry pieces acquired through purchase and confiscation have been examined at the Diyarbakir Archaeological Museum to observe this change. The artifacts cannot be dated because they have not been discovered through systematic excavations and the context in which they had been discovered is unidentified. Furthermore, because there is no method for archaeometrically dating gold artifacts, national and international jewelry catalogues, articles, and theses written on jewelry have been studied in the dating of jewelry covered by the study. Following these reviews, visual comparisons have been used to determine the possible dates of the jewelry. The chemical composition of the gold jewelry and jewelry pieces has been determined using the Portable Energy Dispersive X-ray Fluorescence spectrometer (P-EDXRF) after visual descriptions of the gold jewelry and jewelry pieces have been made. It has been attempted here to comprehend how the gold ratio in jewelry changes on periodically basis in this study, 17 gold artifacts have been introduced, and the analysis results have been interpreted. When the overall chemical composition of the artifacts has been examined, gold + silver and gold + silver + copper content has been determined as a result of the analysis. The gold content in pre-Roman jewelry has been lower than in Roman jewelry, and the majority of the artifacts have been electrum, according to periodic comparisons of the contents of these alloys. It was acknowledged that in ancient gold production technology that artifacts have been produced by using the element of gold and alloys in which the ratio of gold was reduced together with silver. This tradition is found to be coincided with the artifacts after 2800 BC, when gold production began, and the Lydian Period (7th century BC and later), when the separation of gold and silver has been discovered.