NQTC gemstone laboratory has long had a reputation for providing timely and accurate gemstone testing reports to our clients and serves the entire industry through our extensive contributions to gemological research. We have the latest advanced technology to ensure that our gemologists are trained in the latest methods of identification and analysis. The lab provides a variety of tests and certifications to meet your needs.
The work of the NQTC gemstone laboratory includes characterization of natural gemstone materials to understand gemstone formation, trace element chemistry, color genesis, and possible geographic origins. Areas of focus include processing detection and the separation of natural and synthetic gemstone materials. Through research and fair grading and analysis of gemstones,

the NQTC gemstone laboratory is committed to protecting the public who purchase gemstones and jewelry by setting global quality standards.
Today, the NQTC gemstone laboratory is one of the world's leading gemological laboratories, especially for high-end colored stones, diamonds, and pearls. NQTC gemstone laboratory provides independent expert advice in the field of gemstone analysis. Among them are gem dealers, jewelers, auction houses and private clients from many countries. The NQTC gemstone laboratory mainly detects loose cut stones, but also inlays in jewelry. The test report is written in English, with the option to provide a Chinese version. However, the published test reports are for identification only and do not provide business estimates.