3D Jewelry Design
Precision digital development.
Custom Jewelry Manufacturer
for Global Brands
OEM/ODM fine jewelry production with CAD design, flexible MOQ, NDA protection and strict quality control. From concept to production, we help brands launch and scale jewelry collections.
Start Your Project15+ Years ExperienceJewelry manufacturing expertise
80,000+ SamplesExtensive development library
Low Flexible MOQBuilt for growing brands
Custom with NDAOriginal designs stay protected
Materials We Specialize In
We work with a wide range of materials, with strong expertise in K gold, sterling silver, brass, moissanite and lab-grown diamond jewelry manufacturing.
PRECIOUS METAL EXPERTISE
Custom Gold Jewelry
Develop original jewelry in 10K, 14K and 18K gold with full in-house support from CAD and sampling through finishing and repeat production.
- Flexible sampling and production
- Custom alloy colors and finishes
- Natural and lab-grown stones
- OEM and ODM development
SCALABLE FINE JEWELRY
Sterling Silver Jewelry
925 sterling silver combines accessible pricing with fine-jewelry detail. We support stone setting, polishing, plating and repeatable production for growing collections.
- Ready-to-customize design directions
- Gold vermeil and rhodium options
- Consistent bulk production
- Private label packaging support
COMMERCIAL COLLECTIONS
Brass Jewelry 50pcs+
Brass offers an effective balance of design flexibility, finish and price for larger collections. Advanced casting, hand finishing and multiple plating options support complex silhouettes without losing commercial efficiency.
Contact UsLong-Lasting, Reliable Plating Options
Choose the tone and surface that best fits your collection, with thickness and finishing controlled to specification.
Gunmetal
Yellow Gold
Rose Gold
Silver
ONE-STOP PRODUCTION
Private Label Jewelry Manufacturing
Turn ideas into a production-ready collection with design support, sampling, finishing, packaging and delivery coordinated by one team.
Learn Custom Process
Our Service Process
A transparent workflow for original design development and private-label customization.
OEM
1
Share your brief
Send sketches, references, target pricing and quantity.
2
CAD development
We refine proportions, construction and production details.
3
Sample making
Your design becomes a physical prototype for review.
4
Approval
Feedback and final adjustments are documented.
5
Production
Controlled manufacturing begins against the approved sample.
6
Upload DesignQC & delivery
Final inspection, secure packing and worldwide shipment.
ODM
1
Design Selection
Choose an existing direction or share your preferred style.
2
Customization Adjustment
Modify materials, stones, size and finishing.
3
CAD & Sample Making
Review production-ready 3D models and samples.
4
Sample Confirmation
Approve the final standard before production.
5
Mass Production
Manufacture with documented quality controls.
6
Get CatalogInspection & Delivery
Inspect, pack and ship worldwide.
Why Choose LANGJI Jewelry Manufacturer
Explore diverse styles and techniques with one trusted production partner.
SEE IT IN ACTION
Inside Our Manufacturing Power
See the people, processes and equipment behind consistent jewelry production.
▶Inside Our Manufacturing Power
Traditional Craftsmanship
Experienced hands for fine detail.
Precision Casting
Consistent detail for bulk orders.
Plating Options
Controlled color and durability.
Stone Setting
Accurate and secure settings.
Gemstone Processing
Natural and lab-grown stones.
Showroom Review
Review samples with our team.
Quality Control
Documented final inspection.
Jewelry Challenges, Solved in Production
CASE STUDYCustom Ring with Precision Engineering
A difficult moving-ring structure was refined for smooth movement, strength and comfortable wear.
CASE STUDYTurning a Sketch into a Finished Collection
Proportions and construction were refined through CAD, sampling and focused client feedback.
CASE STUDYConsistent Quality in Bulk Production
Multi-stage setting, plating and polishing checks kept a large production run visually consistent.
Trusted by Jewelry Brands Worldwide
Reliable OEM and ODM support from design to final production.
LUMINAATELIER N°7ÉLANMONARCHVERAORBIT
Certificates & Quality Standards
Quality Management
Documented processes for consistent production.
Responsible Sourcing
Material choices aligned with responsible supply standards.
Social Compliance
Workplace and supplier expectations reviewed regularly.
Product Testing
Inspection and testing aligned to the product specification.
Meet Us at Global Jewelry Exhibitions
Hong Kong Jewellery & Gem Fair
Meet our team and review new manufacturing directions.
JCK Las Vegas
Discuss private-label development and global production.
Vicenzaoro
Explore fine-jewelry materials, finishes and techniques.
Work with LANGJI on Your Custom Jewelry Business
Share your design, quantity and material requirements. Our team will review the details and respond with a practical route to production.