Abstract: The gems and jewelry market in China is entering the stage of stock economy, and its supply chain and industrial chain have been rapidly adjusted, transformed and upgraded. The demands for paperless, digital, and intelligent gem certificates have also been increasing a lot. In the past few years, in order to promote the high-quality development of the domestic gems and jewelry industry, the research team and the digital construction team of National Gems & Jewelry Testing Co. Ltd (NGTC) have used digital storage, digital characterization, big data computing, artificial intelligence detection, as well as modern anti-counterfeiting tracing codes and chains to actively promote the digital and intelligent testing of gems and jewelry. We are launching the digitally upgraded service of "one item, one certificate, one code, and one chain", which provides technical supports for digital upgrades of the supply chain and industrial chain as well as the possible opening for the recycling market for the used gem and jewelry products.