He presented knowledge derived from various research studies within the gem and jewellery sector. The emphasis was on applying scientific concepts and principles to further develop products with enhanced quality and value. Notable research examples included: the creation of prints on metal using mild acid etching; the production of reticulated patterns on sterling silver; the study of the properties of pink silver; the electro-extraction of copper from metal scraps; the electro-separation of gold from electronic components; the electroforming of copper; the extraction of pure silver from silver nitrate solutions using copper wire; and the study of the microstructure and hardness of sterling silver for gem-setting casting. Furthermore, the lecture explored the study of the percentage of valuable metal alloys that can be recycled in the jewellery manufacturing process within Chanthaburi Province, emphasising the importance of sustainable development in the gem and jewellery industry. The application of this research is expected to enhance quality, foster the creation of unique products, and promote the efficient use of resources within the gem and jewellery industry.