Deep capability in a limited process
- Strong in one product or technique
- Limited coverage across a collection
- Buyer coordinates other stages
Donghai crystal sourcing & development partner
Custom Natural Crystal Components for Independent Designers, Jewelry Brands & Wholesalers.
Bring us a sketch, reference image or physical sample. We coordinate raw material sourcing, specialist cutting, drilling, polishing, sample development, quality inspection, packaging and export—giving you one accountable Donghai partner from concept to repeat orders.
Built for independent jewelry designers, boutique brands and wholesale buyers · Small-batch development and repeat production supported.
TECHNICAL REVIEWMaterial · Geometry · Drilling · Finish
schedule48-hour feasibility review
view_in_arSmall-batch development
descriptionBatch material disclosure
publicGlobal sample shipping
hubDonghai supply network
Why a supply chain partner?
Specialized workshops. One accountable coordination layer.
A factory’s specialization is valuable, but a jewelry collection often needs several distinct processes. We coordinate those capabilities through one project record and one point of contact.
One table. One project record. Multiple specialist capabilities.
A sourcing partner keeps materials, measurements, sample decisions and shipment requirements connected throughout the project.
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One sourcing and quality-management partner
We translate the requirement, match specialist capability, manage samples, follow production, consolidate inspection records and coordinate export.
FacetingDrillingPolishing
CabochonsCarvingPacking
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An inspected, export-ready order
- One approved sample reference
- Consolidated batch documentation
- One shipment coordination contact
Inside the Donghai crystal cluster
A broad industrial network, made usable for overseas buyers.
Donghai’s strength is the concentration of raw-material trading, design, specialist processing, sales, logistics and cross-border commerce. Our role is to turn that depth into a controlled project workflow.
Regional industry figures reported by local authorities. These figures describe the Donghai crystal cluster, not East Origin Gems. Sources: Lianyungang Municipal Government and Jiangsu People’s Congress.
3,400+Regional crystal-processing businesses
300KPeople connected to the regional industry
¥46BReported 2024 cluster trade volume
Full chainSourcing · design · processing · logistics · export
End-to-end project coordination
Start a Technical Review
Every stage produces something the buyer can review.
Requirement review
Drawing, reference image, physical sample, target quantity and intended use.
- Output
- Requirement summary
- Buyer confirms
- Scope and priorities
Material review
Crystal variety, natural or treated status, visual range and availability.
- Output
- Material disclosure draft
- Buyer confirms
- Acceptable visual range
Specialist matching
Geometry, drilling, finish and tolerance assessed against suitable capabilities.
- Output
- Feasibility and sample proposal
- Buyer confirms
- Prototype route
Sample development
Prototype production, comparison, revisions and final reference approval.
- Output
- Approved sample record
- Buyer confirms
- Production reference
Follow-up and inspection
Batch progress, dimensional checks, visual sorting and quantity verification.
- Output
- Inspection record
- Buyer confirms
- Shipment release
Packaging and shipment
Protective packing, batch labels, packing list, invoice and carrier coordination.
- Output
- Export document pack
- Buyer receives
- Tracking and shipment files
Typical development parameters
Useful planning ranges before technical confirmation.
Inquiry acknowledgement
Within 1 business day
Preliminary feasibility review
Typically within 48 hours
Prototype quantity
Typically 3–20 pieces
Standard-component MOQ
Typically 100–300 pieces
Specialized custom MOQ
Typically 300–500 pieces
Standard sample development
Approximately 7–15 business days
Complex sample development
Approximately 15–25 business days
Batch production after approval
Typically 15–30 days
Supported files
JPG · PNG · PDF · DWG · DXF · STP · STEP
Representative development scenario
From a designer’s sketch to a repeatable smoky quartz pendant component.
An illustrative workflow for an independent designer developing a limited-edition European collection. This is not a named or completed customer claim.
Requirement
Elongated hexagonal pendant
Controlled smoky color range, polished skin-safe edges, side drilling and prototype review before batch production.
Technical risk
Chipping near a narrow edge
The requested drilling position reduces the edge thickness. Natural color, clarity, inclusions and zoning also vary.
Coordination plan
Translate, match and prototype
Dimension the sketch, agree on the visual range, match cutting and drilling specialists, then compare prototype variations.
Batch reference
One approved physical standard
Record dimensions, finish, drilling position and visual range, then inspect production against the retained reference.
Component starting points
View Technical Catalog
Start from a reference, then develop the required specification.
Sample available
EOG-FAC-AMY-01
Precision Faceted Components
MaterialNatural amethyst
Size8–25 mm
Typical MOQ100–300 pcs
Sample7–15 days
Sample available
EOG-SPH-SMQ-02
Calibrated Beads & Spheres
MaterialSmoky quartz
Size6–16 mm
Typical MOQ300–500 pcs
Sample7–15 days
Made to order
EOG-CUS-CLR-03
Custom Drilled Components
MaterialClear quartz
GeometryDrawing-based
Typical MOQ300–500 pcs
Sample15–25 days
Quality and transparency
Evidence buyers can inspect—not generic promises.
Each item below represents a document, record or image category that can be attached to a project. Click a card to inspect the intended content.
Material Disclosure
Verify identity and declared treatment status.
Batch Identification
Connect the shipment to its production record.
Dimensional Inspection
Review measurements against approved specifications.
Drilling & Finish Check
Inspect process-specific risks and finishing quality.
Visual Range Reference
Define acceptable natural variation before production.
Protective Packaging
See how surfaces, edges and drilling are protected.
Export Documents
Preview the files used for shipment coordination.
Workshop Evidence
View the relevant process and inspection context.
Material Disclosure · Example
Demo data| Crystal variety | Smoky Quartz |
| Material status | Natural |
| Heat treatment | To be declared per batch |
| Dyeing / filling / coating | To be declared per batch |
| Batch reference | EOG-DEMO-001 |
| Disclosure date | YYYY-MM-DD |
Batch Record · Example
Demo data| Raw-material batch | RM-DEMO-01 |
| Sample approval version | V3 · Pending buyer approval |
| Production quantity | To be confirmed |
| Inspection date | YYYY-MM-DD |
| Packing quantity | To be confirmed |
| Shipment date | To be confirmed |
Start a design review
Send what you have. We will organize the technical questions.
A sketch, screenshot, reference image, sample photo or CAD file is enough to begin. Only your name and work email are required.
mail577300811@qq.com
callWhatsApp: +86 152 5247 4087
schedulePreliminary feasibility response: typically within 48 hours