How to Create the DROSERA Diamond Long Bar Necklace at JINGYING

Introduction

The DROSERA Diamond Long Bar Necklace, originally designed by Japanese jewelry brand Hirotaka, is a striking piece that draws inspiration from the carnivorous Drosera plant. The design captures the plant's fluid, organic motion—delicate tentacles bending toward the center of the leaf, adorned with glistening tips that mimic the nectar that entices prey . With its minimalist yet abstract silhouette, the necklace features a long bar pendant measuring approximately 0.7 cm by 3.2 cm, suspended from an adjustable 67 cm chain, and set with diamonds totaling 0.05 carats in the standard version or 0.11 carats in the black and white diamond variant .

For jewelry brands, retailers, or designers looking to produce their own version of this elegant design, JINGYING Jewelry—a Guangzhou-based manufacturer established in 1998—offers comprehensive OEM and ODM services capable of bringing such a piece to life . This guide outlines the step-by-step process of manufacturing the DROSERA-inspired necklace at JINGYING, from design conceptualization through to quality control and delivery.

Understanding JINGYING’s Manufacturing Capabilities

Before initiating production, it is essential to understand what JINGYING brings to the table. As a genuine OEM/ODM manufacturer with over two decades of experience, JINGYING produces necklaces, pendants, bracelets, earrings, and rings in a variety of metals, including 925 sterling silver, copper with gold plating, and solid gold options such as 9K, 10K, 14K, and 18K . The company's monthly production capacity reaches up to 80,000 pieces, enabling it to handle both small-batch artisanal orders and large-scale retail production .

A standout feature of JINGYING's technical capabilities is its advanced plating technology. The company's gold vermeil plating can reach thicknesses of up to 3.0 microns, significantly exceeding industry minimums. This ensures the gold-like appearance of necklaces endures through regular wear, a critical consideration for pieces like the DROSERA necklace that rely on a lustrous yellow gold finish .

The company also offers a variety of stone-setting options, diamond settings, and platings that are all applied according to client specifications . Crucially, all products are manufactured to meet international standards, ensuring components are nickel-free and lead-free—essential for jewelry intended for export to markets with strict consumer safety requirements .

Step 1: Design Conceptualization and Technical Specification

The first step in producing the DROSERA Diamond Long Bar Necklace at JINGYING is translating the design concept into detailed technical specifications. This phase involves two primary pathways depending on whether the client has a ready-made design or requires design assistance.

For clients bringing their own designs—the OEM pathway—JINGYING's manufacturing process accommodates customization of mechanical components, novel materials, and brand-specific finishes . The client would provide detailed drawings, measurements, and material preferences. In the case of the DROSERA necklace, key specifications would include:

• Pendant dimensions: Approximately 0.7 cm in length and 3.2 cm in width 

• Chain length: 67 cm, adjustable 

• Metal type: 10K yellow gold (matching the original) or alternative options such as 925 sterling silver with gold plating or solid 14K/18K gold 

• Stone specifications: Diamond carat weight (0.05 ct for white diamonds, or a combination of black and white diamonds at 0.11 ct) and setting style 

• Finish: Rhodium plating (for the standard version) or black ruthenium plating (for the black and white diamond variant) 

For clients opting for the ODM pathway—those who rely on the manufacturer's design expertise—JINGYING's in-house design team can assist in creating market-ready products. The team utilizes professional software such as Rhino and JewelCAD to create detailed 3D models of necklace designs, allowing clients to visualize the piece before production commences .

Step 2: CAD Modeling and Prototyping

Once the design specifications are finalized, JINGYING's design team creates a detailed 3D CAD (Computer-Aided Design) model of the necklace. This model serves multiple purposes: it allows for precise visualization of the piece, enables technical refinement of the design, and serves as the blueprint for the manufacturing process.

The CAD model is particularly critical for a design like the DROSERA necklace, where the pendant's organic, curved silhouette must accurately replicate the plant's fluid motion while maintaining structural integrity. The design team can adjust the curvature of the bar, the placement of stone settings, and the overall proportions to ensure the piece aligns with the client's vision .

Following CAD approval, a physical prototype—often created through 3D printing or wax casting—is typically produced. This prototype allows the client to evaluate the piece's weight, feel, and aesthetic in three dimensions. It also serves as a test piece for the casting and setting processes, enabling the manufacturer to refine the technical approach before full-scale production .

Step 3: Material Selection and Sourcing

With the design finalized, JINGYING's procurement team sources the required materials. For the DROSERA necklace, this involves:

Metal Selection: Depending on the client's specifications, JINGYING can source 925 sterling silver, 9K, 10K, 14K, or 18K gold . The original Hirotaka design uses 10K yellow gold, a popular choice that balances durability with luxury .

Diamonds: The necklace requires high-quality diamonds. For the standard version, 0.05 carats of white diamonds are needed; for the black and white variant, 0.11 carats of both black and white diamonds are required . JINGYING's established supplier relationships ensure consistent quality and ethical sourcing .

Plating Materials: The final finish—whether rhodium plating for the standard version or black ruthenium plating for the variant—requires specific plating solutions and equipment .

All materials undergo inspection upon arrival to ensure they meet JINGYING's quality standards and regulatory compliance requirements (nickel-free and lead-free) .

Step 4: Production—Casting, Polishing, and Stone Setting

The manufacturing process at JINGYING follows a systematic workflow, with quality control checkpoints at each stage.

Casting: The CAD model is used to create a mold, typically through lost-wax casting for fine jewelry. Molten gold (or silver) is poured into the mold to form the pendant and chain components. This process requires precision to capture the delicate curves of the DROSERA design while ensuring the metal is free from porosity or defects .

Polishing and Finishing: Once cast, the metal components undergo polishing to achieve a smooth, lustrous surface. This step is critical for the DROSERA necklace, as the design's appeal relies on the contrast between the polished yellow gold silhouette and the sparkle of the diamonds. JINGYING's craftsmen use specialized equipment to achieve the required finish, paying particular attention to the pendant's organic curves .

Plating: The pendant and chain then undergo plating according to the client's specifications. The standard version receives rhodium plating, which enhances the white, reflective quality of the metal and protects against tarnishing. The black and white diamond variant receives black ruthenium plating, providing a dark, dramatic contrast that balances the design's "sweet yet dark allure" . JINGYING's plating technology, capable of reaching up to 3.0 microns thickness, ensures the finish is durable and long-lasting .

Stone Setting: The diamonds are then set into the pendant. This delicate process requires precision to ensure the stones are securely held while maximizing their brilliance. Depending on the design, the setting may involve prong, bezel, or pavé techniques. For the DROSERA necklace, the stones are placed to mimic the "glistening tips" of the carnivorous plant, requiring careful placement and alignment .

Step 5: Quality Control and Inspection

JINGYING implements systematic quality control at every stage of manufacturing to ensure each piece meets international standards . The final inspection phase involves a comprehensive evaluation of each necklace:

• Metal integrity: Checking for porosity, cracks, or structural weakness

• Plating quality: Ensuring the plating is even, consistent, and meets the specified thickness

• Stone setting: Verifying that diamonds are securely set, correctly aligned, and free from damage

• Finish: Inspecting for scratches, polishing marks, or other surface imperfections

• Weight and dimensions: Confirming the piece matches the specified measurements

This systematic approach helps prevent common issues such as oxidation, plating failure, or structural weakness that could damage a brand's reputation .

Step 6: Packaging and Delivery

Once the necklaces pass inspection, they are prepared for packaging and shipment. JINGYING offers customizable packaging options, allowing clients to present the jewelry in brand-appropriate boxes, pouches, or display cases.

The company's production capacity of up to 80,000 pieces per month ensures timely delivery, even for larger orders. Streamlined workflows and established supply chains enable JINGYING to maintain consistent turnaround times without compromising quality . For international clients, particularly those in Western markets such as the United Kingdom, the company's customer support team fluent in English facilitates smooth communication throughout the order process .

Conclusion

Manufacturing the DROSERA Diamond Long Bar Necklace at JINGYING involves a systematic process that leverages the company's extensive experience in jewelry production. From initial design and CAD modeling through material sourcing, casting, plating, stone setting, and quality control, JINGYING's comprehensive OEM/ODM services provide a reliable pathway for bringing this elegant, nature-inspired design to market.

The company's technical sophistication—particularly its advanced plating technology capable of reaching 3.0 microns thickness—ensures the finished piece meets the durability and aesthetic standards expected of fine jewelry . Its material versatility, spanning 925 sterling silver to 18K solid gold, offers clients flexibility in positioning their product within different market segments . And its systematic quality control provides assurance that each necklace will meet international standards for safety and craftsmanship .

For jewelry brands seeking to produce their own version of the DROSERA-inspired necklace, JINGYING offers a proven, established manufacturing partner with the technical expertise, production capacity, and quality commitment necessary to transform a design concept into a finished, market-ready product.