Gemstone Jewelry Manufacturing: How it Works

Creating beautiful gemstone jewelry is a detailed process that blends modern technology with traditional craftsmanship. At Tonglin Jewelry, we focus on making high-quality products.

We use advanced methods like CAD software, 3D printing, and lost wax casting. We also maintain strict quality control at every step. Our factory serves global B2B clients with reliable, consistent production and professional service.

Step 1: Jewelry Design with CAD

Every piece begins with a jewelry design concept. Our designers use computer-aided design (CAD) software to build a 3D model of the jewelry item. This allows for high precision and easy aesthetic adjustments. Whether it’s a detailed ring or a gemstone pendant, 3D design helps clients see the final product before it is made.

At Tonglin Jewelry, we work closely with clients to develop custom CAD designs. This service ensures the final piece of jewelry meets exact specifications, from stone size to setting style.

Step 2: 3D Printing and Wax Modeling

Once the CAD is approved, the file is used to create a 3D printed or 3D wax model. This wax model is a physical replica of the design and plays a key role in the next step—casting.

We use high-resolution printers for excellent detail. This step helps identify any design flaws early and improves the accuracy of the final jewelry item.

Step 3: Lost Wax Casting with Precious Metals

The wax model is placed in a mold and then melted out during the lost wax casting process. This creates a cavity where molten metal—such as gold, silver, or other precious metals—is poured. Once the metal hardens, the mold is broken, revealing the rough jewelry form.

This traditional method produces strong, detailed metal pieces. At Tonglin Jewelry, our casting team ensures precise temperature control and clean pours for high-quality results. Whether for gold, rose gold, or 925 silver, our factory can handle bulk casting with consistency.

Step 4: Stone Setting by Skilled Artisans

After casting, the jewelry is cleaned and polished. Next, our skilled artisans begin the stone setting process. This step requires great care and precision, especially for gemstone jewelry.

Each gemstone is placed into its setting by hand. From prong to bezel settings, our jewelers ensure a secure fit and perfect alignment. Proper setting enhances the brilliance and longevity of the stones.

Tonglin Jewelry has years of experience working with different types of gemstones. Whether you're sourcing birthstones, sapphires, or diamonds, we offer excellent sourcing and finishing support.

Step 5: Polishing, Plating, and Final Touches

Once the stones are in place, each piece is polished to a mirror finish. If needed, it goes through additional processes such as rhodium or gold plating. We apply durable coatings that improve shine and resist tarnish.

Tonglin Jewelry has its own electroplating facility in-house. This allows us to control plating thickness, finish quality, and turnaround time—all without outsourcing. Our plating options include gold, rose gold, silver, and custom finishes.

Step 6: Quality Control and Delivery

Before any jewelry item leaves our factory, it goes through a strict quality control process. We inspect everything: metal smoothness, stone tightness, plating color, and overall finish. Each product must meet our high-quality standards before packing and shipping.

Tonglin Jewelry is proud to offer 100% inspection for all outgoing orders. Our factory is designed to serve B2B wholesale clients who demand reliability and precision. We also support low MOQs for new brands or startups, offering both flexibility and efficiency.

Why Choose Tonglin Jewelry?

• End-to-End Service: From CAD design to casting, setting, plating, and packaging—all in-house.
• Fast Prototyping: Get your sample in just 3–5 days.
• Flexible MOQ: Start small and scale fast.
• High Quality: Every product goes through full QC, with strict material and process checks.
• Custom Support: Modify designs, select stones, and adjust finishes easily.

We work with jewelry brands, designers, and wholesalers worldwide to bring their vision to life. Tonglin Jewelry uses modern technology. They have a dedicated team. This ensures that every piece of gemstone jewelry is beautiful and precise.