Jewelry Casting Solutions
Complete OEM/ODM Process Overview
Jewelry casting is one of the most widely used manufacturing techniques by international brands, especially for customized jewelry made of 925 sterling silver, K gold, and brass. Through a complete process that includes 3D modeling, wax mold making, metal casting, polishing, and e-coating, HUNGKUANG’s advanced casting technology accurately reproduces complex structures and refined details—ideal for rings, pendants, earrings, and bracelets.
This article provides an in-depth overview of the jewelry casting process, suitable product types, and comparisons with CNC and stamping techniques. It also highlights HUNGKUANG’s professional casting expertise, helping brands efficiently manage design and craftsmanship with flexibility, stable mass production, and strict quality control, while offering proactive suggestions to support faster development for clients.
1. What Is Jewelry Casting?
Jewelry casting is a manufacturing process that involves melting metal at high temperatures and injecting it into molds to form precise shapes. It allows for the creation of highly complex three-dimensional designs and is especially suitable for jewelry made of sterling silver, K gold, and brass. This technique is widely used by international brands for producing rings, pendants, and earrings, offering both aesthetic appeal and structural stability.
While casting is a common production method across various types of jewelry, not every design or product category is suitable for casting. Factors such as material, design complexity, and structural requirements all play a role in determining the best approach. This is where HUNGKUANG’s expertise adds value — with extensive experience in jewelry manufacturing, we provide professional guidance to help clients select the most appropriate process, enhance product quality, and control development costs efficiently.
2. Complete Process of Traditional Jewelry Casting for Mass Production
A high-quality piece of jewelry typically goes through the following steps:
1. Design & 3D Modeling: Create a digital model based on the client’s design or reference images. The HUNGKUANG team assists in reviewing structural details and making necessary adjustments.
2. Wax Model Production: Produce the wax prototype using 3D printing or traditional methods for client confirmation.
3. Master Model Creation: Cast a metal master model that serves as the basis for mold duplication.
4. Rubber Mold Making: Develop rubber molds from the master model to prepare for mass production.
5. Wax Injection: Inject wax into the rubber molds and remove the formed wax patterns.
6. Wax Tree Assembly: Assemble multiple wax patterns into a “tree” structure for batch casting.
7. Investment & Burnout: Encase the wax tree in plaster (investment material), let it harden, and then place it in a furnace to remove the wax.
8. Metal Casting: Melt silver or other metals and pour them into the plaster mold to form the jewelry pieces.
9. Finishing & Polishing: Remove sprues and smooth surfaces to achieve a refined finish.
10. Post-Processing: Apply e-coating, stone setting, laser engraving, or brand logo marking.
3. Jewelry Types Suitable for Casting
Casting is particularly suitable for designs that require three-dimensional structures or intricate textures, such as:
- Rings: Relief, engraved, or multi-layered styles. HUNGKUANG specializes in raised lettering through precision casting techniques.
- Pendants: Three-dimensional, symbolic, or geometric shapes — especially lifelike portrait pendants, one of HUNGKUANG’s core strengths.
- Earrings: Delicate and detailed pieces with diverse shapes; HUNGKUANG ensures solid and durable structures even in hinged or clip-style designs.
- Bracelets / Bracelet Components: Designs featuring curved or dimensional structures. HUNGKUANG provides expert evaluation and guidance on the most suitable techniques and production methods.
4. Advantages and Disadvantages of Casting Compared with Other Techniques
| Technique | Advantages | Disadvantages | Suitable Products |
|---|---|---|---|
| Traditional Casting | Lower cost; capable of producing complex three-dimensional structures | Lower precision; longer production time | Rings, pendants, earrings |
| CNC Machining | High precision; fewer production steps | Higher cost; more stable for mass production | Openable bracelet designs |
| Stamping | Stable cost; high production efficiency | Limited to thin and simple flat structures | Flat tag-type jewelry |
5. HUNGKUANG’s Casting Project Examples
HUNGKUANG has supported numerous brands in developing a wide range of casting-based jewelry, such as:
- Champion Rings: Combining 3D relief with brand elements, enhanced by structural evaluation, e-coating, and color painting for a premium finish.
- Signature Brand Bracelets: Unique patented structures showcasing refined craftsmanship. (HL0178)
- Religious and Cultural Jewelry: Buddha and scripture pendants featuring detailed raised text and precise relief casting. (CL1087CU)
- Accessory Components: Fine small parts combined with woven bracelets. (HL0273)
6. HUNGKUANG’s Casting Capabilities
HUNGKUANG’s strength lies in its vertically integrated manufacturing capabilities:
- Taiwan/China Factory Management: Full control over 3D modeling, wax sampling, process detailing, and factory production.
- Low MOQ Support: ODM/OEM orders starting from just 50 pieces for flexible collaboration.
- High-Quality Casting: Exceptional surface detailing, precise dimensions, and advanced production techniques.
- Strict Quality Control: Jewelry-grade e-coating and color painting, dual-stage quality inspection, near-zero defect rate, and compliance with EU/US brand standards.
- Professional Project Support: Providing design consultation and production planning to enhance development efficiency.
7. Sustainability and Material Efficiency
In line with sustainable manufacturing trends, HUNGKUANG adopts silver recycling and reuse practices to minimize material waste, align with ESG initiatives, and help brands meet international market expectations.
8. Buyer Collaboration Guidelines & Steps
If you plan to develop casting-based products, we recommend following this process:
- Provide design files or reference images.
- Specify material, size specifications, budget, and quantities.
- HUNGKUANG conducts DFM feasibility and cost evaluations.
- Proceed with 3D modeling and wax-sample approval.
- Run a small-batch test to ensure quality.
- Move into mass production, with options for brand logo application and packaging design.
Note: DFM （Design for Manufacturing) refers to designing products with manufacturing and assembly constraints and capabilities in mind from the outset, in order to reduce costs, shorten development cycles, and improve overall quality.
Contact HUNGKUANG Today for Professional Advice and Instant Quotation!
Casting is the optimal choice when developing high-quality jewelry with complex forms. It not only ensures complete three-dimensional structures but also leverages mass production to reduce costs and improve efficiency. Compared with CNC or stamping, casting is better suited for detailed engraving and 3D designs in 925 sterling silver, K gold, and brass.
Built on our Taiwan-owned facilities, HUNGKUANG offers end-to-end jewelry OEM/ODM services—from 3D modeling and wax approval to casting, polishing, and e-coating. Every stage is tightly controlled to meet international brand standards. We support low MOQ (starting from 50 pieces) and provide expert recommendations tailored to your customization needs, ensuring a faster and more reliable development process.
If you are seeking a Taiwan jewelry manufacturer or wish to learn more about quotations for sterling silver OEM and the jewelry OEM/ODM collaboration workflow, feel free to contact HUNGKUANG. Our team will leverage professional craftsmanship and a comprehensive production system to help your brand build highly competitive products.
👉 Contact us now for tailored design recommendations and an instant quotation!