ZYI Gems Factory is a specialized manufacturer based in Shanghai, China, with nearly two decades of experience in the gemstone industry. Operating as a contract manufacturer with dedicated factory facilities, the company focuses on the production of a diverse range of synthetic and semi-precious stones, including Cubic Zirconia (CZ), Synthetic Ruby, Synthetic Sapphire, and Synthetic Spinel, as well as natural materials like Agate, Onyx, Rosenquartz, and Moonstone.