Quality Control Process for Custom Jewelry Manufacturing
From Raw Materials to Finished Products, Every Step Is Controlled
At 96 Jewelry, quality control is integrated into every stage of the jewelry manufacturing process.
For OEM and ODM jewelry projects, product consistency depends not only on final inspection, but also on controlling materials, production processes, workmanship details, and testing standards from the beginning.
Our quality team follows a structured inspection system covering:
Incoming Material Inspection → Production Process Control → Finished Product Inspection → Performance Testing → Corrective Action
This approach helps jewelry brands reduce quality risks and achieve stable production results for volume orders.
Our Jewelry Quality Control Workflow
1. Incoming Material Inspection
Verify Materials Before Production Begins
Quality starts with the materials.
Before production, all incoming materials are inspected to confirm they meet project requirements, including material specifications, appearance, and basic performance.
Inspection Items Include:
Metal Materials
- Stainless steel grade verification (304 / 316L)
- Surface condition inspection
- Dimension and thickness checking
- Material certificate review when required
Jewelry Components
- Chains
- Clasps
- Bagues
- Connectors
- Findings
- Decorative elements
Surface Materials
- PVD plating components
- Resin parts
- Acrylic elements
- Perles de verre
- Natural stone components
Quality Control Focus:
✔ Correct material selection
✔ Consistent specifications
✔ No visible defects before production
2. Production Process Quality Control
Control Every Manufacturing Stage
Jewelry quality is created during production.
Our QC team monitors critical manufacturing processes to identify and correct issues before they affect the final products.
Casting & Forming Inspection
For casting and molding processes:
Inspection focuses on:
- Shape accuracy
- Surface defects
- Casting marks
- Air bubbles
- Missing details
- Structural integrity
For lost-wax casting production:
Key checkpoints include:
- Wax injection quality
- Wax model inspection
- Wax tree assembly
- Casting result inspection
Welding & Assembly Inspection
During assembly:
We check:
- Welding strength
- Connection points
- Alignment accuracy
- Component positioning
- Functional movement
Examples:
- Bracelet clasp connection
- Chain link connection
- Earring component assembly
- Brooch pin attachment
Polishing & Surface Finishing Inspection
Surface finishing directly affects customer experience.
Inspection includes:
- Mirror polishing consistency
- Brushed finish uniformity
- Edge smoothness
- Scratch detection
- Surface cleanliness
For stainless steel jewelry:
Special attention is given to:
- Sharp edges
- Uneven polishing
- Surface marks
- Color consistency after finishing
Plating & Color Inspection
For plated jewelry:
QC checks include:
- Color consistency
- Coating appearance
- Surface coverage
- Adhesion performance
Common finishes:
- PVD gold plating
- Silver plating
- Black plating
- Rose gold plating
3.Finished Product Inspection
Final Inspection Before Shipment
Before products leave the factory, finished jewelry undergoes final inspection according to product requirements.
Appearance Inspection
Checking:
✔ Scratches
✔ Dirt or residue
✔ Uneven polishing
✔ Color difference
✔ Surface defects
✔ Missing components
Dimension Inspection
Measurement verification includes:
- Length
- Width
- Épaisseur
- Weight
- Product size tolerance
Examples:
- Necklace length
- Bracelet diameter
- Ring size
- Pendant dimensions
Functional Inspection
Depending on the product type:
We test:
- Clasp opening and closing
- Chain flexibility
- Earring mechanism
- Pin movement
- Connector strength
4. Jewelry Performance Testing
Testing Based on Product Requirements
For specific projects, additional testing can be arranged to verify material safety and product performance.
Common Testing Items
Tests de libération de nickel
Used to evaluate nickel release performance of metal components.
Applicable products:
- Bijoux en acier inoxydable
- Boucles d'oreilles
- Bagues
- Bracelets
- Chains
Salt Spray Testing
Used to evaluate corrosion resistance.
Testing can help assess:
- Surface durability
- Plating performance
- Corrosion resistance
Coating Adhesion Testing
Used for plated products.
Evaluation includes:
- Coating bonding
- Surface durability
- Finish stability
Material Testing Reports
Available documentation may include:
- SGS reports
- RoHS testing
- REACH compliance documents
- Material certificates
5. Quality Issues & Corrective Action
When Problems Occur, We Focus on Root Causes
Quality control is not only about finding defects.
It is also about understanding why problems happen and preventing them from repeating.
Quality Control Records & Traceability
Creating Reliable Production Information
For each production project, quality records help track:
- Material information
- Production status
- Inspection results
- Testing documents
- Quality issues and solutions
A reliable quality system helps brands achieve:
✓ Consistent product quality
✓ Fewer production risks
✓ Stable product appearance
✓ Better customer experience
✓ More predictable supply planning
At 96 Jewelry, quality control is built into every stage of jewelry manufacturing — from the first material check to final shipment inspection.
Our Corrective Action Process
1:Identify the Issue
Problems are recorded based on:
- Defect type
- Production stage
- Product batch
- Inspection result
2:Analyze the Root Cause
The team reviews:
- Material factors
- Production conditions
- Workmanship factors
- Process standards
3 :Implement Improvement Actions
Solutions may include:
- Process adjustment
- Worker training
- Tooling improvement
- Material replacement
- Additional inspection points
4 :Verify Results
After improvement:
- Products are rechecked
- Process stability is confirmed
- Preventive actions are documented
Need a Reliable Jewelry Manufacturing Partner?
Whether you are developing stainless steel jewelry, custom designs, or new product collections, our team can support your project with structured manufacturing and quality control processes.