B2B Jewelry Expertise and Manufacturing in China
Gemmological expertise & certification
Where do your gemstones come from?
Do you provide certificates (GIA, IGI, etc.)?
Gemmological Expertise: As expert gemmologists, we systematically verify that the stone matches its certificate before any B2B jewelry manufacturing begins.
International Option
How do you guarantee the ethics of your sourcing?
- Rigorous partner selection: We only work with gemstone cutting facilities and trading offices in India and Thailand that comply with local and international labor standards. We prioritize historic family-run businesses with whom we maintain long-term relationships.
- Supply chain transparency: By eliminating opaque middlemen, we maintain direct control over the origin of our stones. Every gemstone used in our B2B jewelry manufacturing is tracked from its rough purchase point to its setting in our production workshop.
- Gemmological expertise in the service of ethics: Our role as expert gemmologists goes beyond visual quality; it includes verifying the integrity of the source to offer jewelry professionals complete peace of mind.
Learn more about Chinese laboratories
Made in China
To guarantee the compliance of our B2B jewelry manufacturing, we collaborate exclusively with Chinese state-certified laboratories, renowned for their scientific rigor. Our main references are:
NGTC (National Gemstone Testing Center)
GIC (Gemmological Institute of China)
Originating from the China University of Geosciences, this laboratory is a major academic and technical reference for colored stone identification and high-precision sourcing.
GDTC (Guangdong Gems & Precious Metals Testing Center)
Highly active in Shenzhen and Guangzhou, this is one of the laboratories most requested by wholesalers for its speed and reliability regarding precious metals and gems.
GUILD Gem Laboratories
Although international, their Shenzhen center is highly renowned for its expertise in colored stones (Emeralds, Rubies, Sapphires), providing highly detailed analysis reports that are deeply valued in high jewelry.
Guarantees & quality commitments
What are your quality control processes at the end of production?
Ethics is the pillar of our unique expertise. At Dazzling Gem, we are conscious of the responsibility stakes in the high jewelry sector. Our commitment is based on three concrete pillars:
- Gemological Verification: Our gemological expert inspects each set stone to ensure it perfectly matches the ordered grade (color, clarity, cut) and that no gemstone was weakened during the setting process.
- Technical & Structural Control: We inspect the sturdiness of the prongs, the smoothness of the joints (for bracelets and necklaces), and the quality of the polishing. Each piece of jewelry undergoes a finishing test under a binocular microscope to guarantee a high jewelry result.
- Metal Conformity & Hallmarking: We systematically verify the gold or platinum titration. Upon request, we include a laboratory evaluation (such as NGTC) to certify the metallic composition and the authenticity of the stones before final sealing.
What happens if a non-conformity is detected in a batch?
- Reporting within 72 hours: Upon receipt of your high jewelry lot, we invite you to perform a visual and technical inspection. In the event of a discrepancy (titration error, setting defect, or stone not complying with the ordered grade), our dedicated team will analyze your report (supported by HD photos/videos).
- Immediate support: If the non-compliance is proven, we activate our custom production warranty. Depending on the nature of the issue and your inventory urgency, we will either proceed with the priority repair of the piece in our Shenzhen workshop, or issue an immediate commercial credit.
- Supply chain analysis: Each dispute is subject to an internal audit. If the issue is related to sourcing (e.g., an undetected impurity in a batch of Indian sapphires), we trace it back to the source to immediately correct the flow and secure your future orders.
What is your policy in the event of dissatisfaction with a custom-made product?
Custom high jewelry is a mutual commitment. Since each piece is unique and created according to your specifications, a full refund is not possible once production has begun. However, our priority is to ensure that the final result exceeds your expectations:
- 1CAD Validation (Approved for Production): The signing of the 3D design constitutes final approval. This is the key step that secures your vision before the metal is cast.
- 2Strict Control Points: We require step-by-step validations (photos of the stones, videos of the finished piece) to eliminate any surprises before shipping.
- 3Conformity Guarantee: If a technical discrepancy from the approved design is found, Atelier Dazzling Gem undertakes to carry out the necessary alterations or re-crafting at its own expense until perfect compliance is achieved.
Are your pieces of jewelry hallmarked?
However, we adapt our service to the requirements of our professional clients:
- Maker’s Mark & Guarantee: By default, our creations can be delivered with our workshop markings guaranteeing the metal fineness (18K Gold, Platinum, etc.).
- “White Label” Option: To facilitate your own sales process, we can deliver your pieces without hallmarks. This allows you to stamp your own sponsor’s or responsibility mark upon receipt in your country, avoiding double hallmarking.
- International Compliance: We are familiar with the specific requirements of the European and American markets. We ensure that the necessary space for future hallmarking is preserved on the setting (the ‘flat’ of the band or the clasp).
How do you guarantee the authenticity of the gemstones remotely?
How can I ensure the final quality before shipping from Shenzhen?
- High-Definition Visual Inspection : Before the package is sealed, we send you macro photographs and videos of your finished pieces under natural light.
- Gemstone Validation: For high jewelry pieces, we film the setting and the brilliance of the center stones to confirm their compliance with the provided certificates (GIA/IGI).
- Real-Time Exchange: We use instant messaging tools (WeChat or Email) to allow you to validate technical details (hallmarks, finishes, polishing) live from the workshop.
- Weight and Measurements Report: ach shipment is accompanied by a technical datasheet confirming the final gold weight and the exact carats.
Logistics & importation from Shenzhen
What are your delivery times from Shenzhen?
Our delivery times depend on the type of order, the chosen method of transport, and its destination. Here are our standard lead times:
Important : un numéro de suivi (tracking) vous est communiqué dès le départ du colis pour un suivi en temps réel de votre marchandise.
- In-Stock Products (Showroom/Catalog): Shipped within 24 to 48 hours upon receipt of full payment via Letter of Credit (L/C).
- Manufacturing and Mass Production: The production lead time begins once the design and all technical specifications have been validated.
Single/Custom Orders: 15 business days,
Mass Production Orders: 15 to 25 business days,
Complex or Specific Technical Processes: An additional 5 business days should be expected. The exact lead time will depend on the actual type of product.
- Transit Time (Shipping): * Secure Express (DHL/FedEx/UPS): 3 to 7 business days to Europe and North America.
- Specialized Carrier (Malca-Amit/Brink’s): * Variable timeframes depending on security and customs protocols, generally 5 to 10 business days.
How are customs duties and taxes handled?
Customs duties and import taxes are calculated according to the regulations in force in your destination country. As a supplier based in Shenzhen, we ship our goods Ex-Tax (excluding VAT). Customs duties and local VAT are the responsibility of the buyer and are typically collected by the carrier at the time of delivery. To facilitate this process and prevent any logistical delays, we systematically include a complete documentation kit with your package, including the detailed commercial invoice, the packing list (order details), and the gemological certificates.
To help you calculate your total landed costs, here is an example of the fee breakdown for a typical import into the European Union (rates may vary depending on the specific customs nomenclature of your country):
Fee Type
Responsibility
stimate / Basis of Calculation
Valeur Marchandise (Ex-Works)
Buyer
Manufacturing Cost + Stone Sourcing + Precious Metals
Shipping & Insurance
Buyer
Varies based on volume and declared value
Customs Duties (EU)
Buyer
Between 0% and 2.5% (depending on the type of jewelry/alloy)
Import VAT
Buyer
National rate (e.g., 20% in France) on total value
Carrier handling fees
Buyer
Flat fee for advancement of customs funds
Import VAT is not a cost
Concrete example for a high jewelry order
Here is a concrete example for a high jewelry order valued at €50,000 shipped from our Shenzhen workshop to France. This example illustrates the cost breakdown for a jewelry professional:
Element
Amount / Rate
Estimated total
Value of Jewelry (excl. VAT)
Manufacturing price
50 000,00 €
Transport & Insurance (Luxury)
Secure flat rate
1 200,00 €
Customs Duties
~2,5% (on value + shipping)
1 280,00 €
Handling fees (Customs)
Carrier flat rate
50,00 €
VAT(20%)
Reverse-charged
(€0 out of pocket)
10 500,00 €
ACTUAL CASH OUTFLOW
–
52 530,00 €
Which secure carriers do you use (Ferrari, Malca-Amit, FedEx) ?
Who is responsible for customs duties and taxes?
Is the merchandise insured during transport?
Wholesale terms & conditions
What is the minimum order quantity (MOQ)?
Do you offer volume discounts?
Is it possible to order samples before mass production?
Yes, absolutely. We encourage ordering samples or creating a prototype before launching any mass production. This allows you to validate the setting quality, the rendering of the stones, and the compliance of the design with your requirements.
Payment & transaction security
What are the payment terms (deposit/balance) ?
Payment adapts to the nature of the transaction and your physical presence :
1. Showroom Selection (Immediate Stock)
For professionals present in Shenzhen selecting pieces from our collections or limited editions:
- Payment: Full payment (100%) at the time of selection.
- Method: Immediate transaction via secure bank transfer or accepted local/international payment solutions.
- Delivery: Hand-delivery of the merchandise or secure shipping organized on the same day.
2. Custom Manufacturing or Mass Production (Workshop)
For orders requiring manufacturing or specific stone sourcing :
- Launch deposit: 50% upon signing the order form (allows securing the stones and launching the workshop production).
- Final balance: 50% to be paid via Letter of Credit (L/C), once production is completed.
- Validation : The balance is only required after final validation of the finished piece (by physical inspection at the showroom or by sending HD photos/videos and certificates for remote clients).
3. Sourcing of Loose Precious Stones
For professionals present in Shenzhen selecting pieces from our collections or limited editions:
- Payment: 100% upon reservation of the gem.
- Important: As the high jewelry stone market is extremely fluid, full payment allows securing the lot immediately at the current market price for your account.
Do you accept secure international wire transfers or letters of credit?
What are your payment facilities for high-volume orders?
Are stone sourcing rates guaranteed during a series order?
Is it mandatory to visit the showroom to validate an order?
Confidentiality & intellectual property
Are my manufacturing designs protected by a confidentiality clause?
How do you guarantee that my models will not be displayed in the showroom?
Do you offer geographic exclusivity on your own collections?
Do you keep the molds and 3D files for my future orders?
Do you offer a 'White Label' manufacturing service?
Manufacturing & custom services
Do you offer custom production based on a simple sketch or an existing design?
- 1Ready-to-Produce Design: You provide us with your CAD files (
.stl,.3dm) for immediate launch into production. - 2Technical Support: You send us a sketch or a rough drawing. Our 3D modelers adjust the technical constraints (metal weight, stone setting) to ensure the design is fully viable before final validation.
- 3Creative Brief : You share an idea or a moodboard, and our in-house design team develops exclusive models for you. Every line is sketched by hand to capture the essence of your vision, before being adjusted to technical constraints to guarantee flawless execution in the workshop.
What metals do you use (18k Gold, Platinum, etc.)?
- Our Standard of Excellence (18 Karat): For all of our collections and standard productions, we work exclusively with 18k Gold (750/1000). We have mastered the three classic alloys: radiant Yellow Gold, soft Rose Gold, and White Gold (palladium-alloyed to guarantee long-lasting whiteness).
- Prestige Metals: Upon special request, our workshop also crafts pieces in Platinum (950), which is ideal for exceptional diamond settings due to its natural density and strength.
- Flexibility & Custom Projects: Because we are, above all, a partner dedicated to your brand’s success, we can accommodate other gold purities (such as 14k Gold for specific export markets) or alternative metals depending on the scale of your project. We analyze each request individually to best align with your specifications and budgetary requirements.
Important : All of our alloys are guaranteed nickel-free and comply with international safety and traceability standards.
Can you create CAD (3D) prototypes?
Can I integrate gemstones from your sourcing service into my custom fabrications?
Yes. Unlike a traditional workshop, Dazzling Gem merges high-precision manufacturing with strategic sourcing. We can select precious stones (diamonds, sapphires, emeralds) for you or work with your own gemstones.
To meet the specific constraints of each design, if the ideal gemstone is not already in our stock, we activate our sourcing network. To fulfill your urgent needs, we rely on the responsiveness of the Shenzhen market, while regularly replenishing our own inventories during direct sourcing trips to India and Thailand. This dual approach allows us to find the exact stone for your project, guaranteeing you a smooth supply chain and total quality control.
Is there a Minimum Order Quantity (MOQ) for custom manufacturing?
No. At Dazzling Gem, we support both emerging designers and established brands. For custom high jewelry (unique pieces), there is no minimum order quantity.
What are your manufacturing lead times, from the sketch to the finished piece?
Thanks to our vertical integration (CAD, sourcing, and on-site workshop), we are extremely responsive.
- Design discussion and sketching: Can be completed within one day.
- CAD and wax/resin model production: Takes 3 working days.
- Manufacturing: 15 working days for a single piece, and 15 to 25 working days for a production run, depending on the complexity of the design, the setting, and the quantity.
We commit to a precise timeline as soon as the quote is approved.
How do you guarantee the confidentiality of my designs?
The protection of your intellectual property is an absolute priority. Each collaboration is governed by a non-disclosure agreement (NDA). Your CAD files and exclusive molds are securely stored and are never reused for other clients or our own collections. Your creative exclusivity is contractually guaranteed.
Guidance
Do you offer "ready-to-sell" collections for boutiques?
Can you help with creating custom packaging?
- Optimization via Existing Stock (Responsiveness & Cost) : We have privileged access to pre-manufactured packaging stocks. This allows us to offer high-quality solutions with various finishing options (materials, colors, interiors). It is the ideal solution to minimize your unit costs and benefit from fast logistics while maintaining a professional presentation standard.
- Custom Design & Manufacturing (Brand Identity): For a more creative approach, we support you through the complete development of your visual identity. From the choice of materials (velvet, leather, wood, eco-responsible paper) to the manufacturing of specific molds for your boxes and bags, we create unique packaging that perfectly reflects the universe of your collection.
Customization (Branding):
In both cases, we can integrate your logo and brand elements (hot stamping, embossing, printing) so that each piece of jewelry is delivered in a box that is ready to be handed over to your final client.
Do you offer a fast replenishment service?
- 1Showroom Purchasing: We present our entire catalog in the showroom, and a portion of our models is available for immediate purchase. Generally, our clients select around fifteen different models to complement their own collections, depending on their preferences and the uniqueness they wish to bring to their window displays.
- 2Ordering Availability: If a displayed model is no longer physically in stock, it remains available for purchase. Thanks to our direct proximity to the workshop, we can restart its production specifically for you within optimized lead times.
- 3Market Adaptability: We do not systematically reproduce every single model identically. Instead, we prefer to adapt to current trends by blending time-tested classics with exclusive new creations. This guarantees that you will always offer pieces that stand out and meet the current expectations of your clientele.
Do you offer a 'ready-for-sale' solution (Packaging & Marketing Content)?
This service is not systematic: we adapt it to the scale of each project and the specific needs of our professional clients. Our objective is to reduce your Time-to-Market by offering you a la carte support, designed to be a true sales accelerator.
- 1Flexible Packaging Solutions: Depending on your budget and timeline, we leverage our Shenzhen ecosystem to provide you with jewelry boxes. We can draw from pre-manufactured stock (with variations in quality and finishes) to optimize your costs, or choose a more creative approach with the complete design and manufacturing of exclusive custom packaging.
- 2Visual Content & Marketing Materials Creation: For our collections, we produce the visuals (packshot photos or lifestyle videos) for our pieces. Depending on the project, this can also include the creation of communication materials such as collection lookbooks, posters, booth display elements, or promotional videos.
