Do you offer IGI or GIA certification?

Yes. We support one-piece custom orders for personal clients, so a single custom jewelry project can also be quoted and produced based on your requirements.

Yes. Tianyu Gems supports wholesale inquiries, OEM/ODM projects, and business orders with flexible quantities. If you are sourcing for retail, wholesale, brand development, or collection launch, we can recommend the most suitable quotation method based on your order type and product scope. 

Tianyu Gems offers both loose stones and finished jewelry. Our main categories include moissanite, lab-grown diamonds, lab-created gemstones, natural gemstones, custom fine jewelry, and OEM ODM jewelry manufacturing. We support a wide variety of products such as engagement rings, wedding bands, earrings, pendants, necklaces, bracelets, bangles, bridal sets, men’s jewelry, and personalized gift jewelry. This makes us a flexible custom jewelry manufacturer for both retail-ready styles and fully bespoke projects.

We offer multiple material options including sterling silver, gold, platinum, moissanite, lab-grown diamonds, lab-grown gemstones, natural gemstones, and pearls. Depending on the project, customers can choose metal type, metal color, stone type, shape, size, setting style, engraving, logo, finish, and packaging. This allows us to support everything from fine moissanite jewelry to premium lab grown diamond jewelry collections.

Yes. We work with individual clients, independent designers, jewelry brands, wholesalers, retailers, and commercial buyers. Whether you are sourcing a single engagement ring or building an OEM ODM jewelry collection for your business, our team can support different order types, styles, and market positions.

To receive a quotation, you can send us a sketch, reference image, sample, CAD file, video, or product inspiration, along with your preferred metal, stone, size, quantity, and any special requirements. Our team will review your request and provide a quotation based on the project details. This is the standard workflow on our custom service page.