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Quality Certificates | Sobling® Sustainable & Certified Silver Jewelry Manufacturer

🌍 Our Commitment to Quality – Backed by Global Certifications

✅ Why Choose Sobling? It's Not Just Beautiful Jewelry, It's Trust You Can Feel.

At Sobling, we believe jewelry is more than just an accessory – it’s a promise of quality. That’s why we follow the highest standards in sourcing, production, and testing to ensure safety, sustainability, and compliance at every step.

♻️ Certified Sustainable Materials

RJC Recycled Silver: All silver we use is sourced from Responsible Jewelry Council certified recycled silver.
SGS & CTT Compliance: Materials fully comply with California Proposition 65 및 EU REACH (211 SVHCs) standards, ensuring safety and eco-friendliness.

🧪 Material Safety Backed by Trusted Testing

SGS Certification – World-leading inspection and certification
CTT Reports – Verified compliance with heavy metal and allergen safety standards
Every item can be provided with compliance documents upon request.

📄 Certification Types We Offer

카테고리	설명
Material Testing Report	Includes silver content, nickel release, and safety tests
Sustainability Proof	Verifies use of recycled and eco-compliant materials
Compliance Documents	For Prop 65, REACH, and other international regulations

Just mention what documents you need when placing an order, and we’ll prepare everything for your shipment and brand support.

💬 Frequently Asked Questions

Is your silver real and safe? Yes. We use 100% genuine 925 sterling silver and offer full testing certifications.
Are your materials eco-friendly? Absolutely. Our silver is recycled and certified by RJC, SGS, and CTT. Free from harmful substances.
Can you provide certificates with orders? Yes, simply let us know which reports you need — we’ll include them with your shipment.

🛡️ Quality Is the Best Marketing Strategy

Working with Sobling means more than just getting beautiful silver jewelry. You get a reliable, sustainable, and globally certified manufacturer that builds real brand trust and long-term value for your business.

Certified to Protect Your Brand

Each certification we hold is more than just a document — it’s a promise of safety, quality, and global compliance. Here’s how each one benefits your brand and customers.

1. EU REACH Compliance (TUV Certified)

Feature: Our products are tested and certified under the European Union’s REACH regulation, which screens for harmful substances such as lead, cadmium, chromium VI, and nickel release. The testing is conducted by TUV, a globally recognized lab.
Advantage: This ensures full compliance with EU environmental and consumer protection laws. It also verifies that our silver jewelry is safe to wear for individuals with metal sensitivities or skin allergies.
Benefit: You can confidently sell in any EU country, promote your jewelry as safe and hypoallergenic, and reduce the risk of customs rejection or customer complaints due to unsafe materials.

📄 Europe Union Reach Test Standard Values for Jewelry

Regulations limit the usage of the following metals in any component of the jewelry or watch items. It is an offence not to comply with these conditions.

카테고리	설명
NICKEL	release is limited to 0.5 micrograms per cm2, per week.
LEAD	content is limited to less than 0.05% by weight in any individual part of the jewelry article.
CADMIUM	content is limited to less than 0.01% by weight in any individual part of the jewelry article.
CHROMIUM VI	not to be included in any quantity.

NOTE: for earrings, nickel release is limited to 0.2 micrograms per cm2, per week.

2. Salt Spray Corrosion Test (TUV Certified)

Feature: Our jewelry undergoes accelerated corrosion testing in a controlled salt spray environment to simulate months of exposure to moisture, sweat, and oxidation.
Advantage: This test evaluates the durability of electroplating and surface finishes. It confirms that our plating won’t easily tarnish, peel, or discolor under normal usage.
Benefit: Your customers will enjoy jewelry that maintains its original shine and beauty over time, which means fewer returns, fewer complaints, and more 5-star reviews.

3. ASTM F2999-19 U.S. Safety Certification (SGS Certified)

Feature: This certification tests for potential skin allergens and heavy metals as per the U.S. ASTM F2999-19 standard, specifically developed for adult fashion jewelry.
Advantage: It confirms that your jewelry is legally safe for distribution across the United States, including through major online platforms such as Amazon, Walmart, and Shopify.
Benefit: You can confidently enter the U.S. market, streamline customs clearance, and demonstrate credibility to American buyers and platforms with strict compliance requirements.

4. FISCHER X-Ray Plating Thickness Verification

Feature: Using X-ray fluorescence (XRF) technology, we measure and verify the exact thickness of plating materials such as gold, silver, or rhodium on each piece.
Advantage: This test eliminates any guesswork about coating durability. It guarantees the finish is consistent, high quality, and meets standards for vermeil or heavy gold plating.
Benefit: You can position your jewelry as luxury-grade, justify a premium price, and assure customers of lasting shine that doesn’t fade after just a few wears.

Long-Lasting Gold Plating Colors

최첨단 주얼리 도금 공정과 가장 엄격한 도금 두께 기준을 채택하여 주얼리 제품의 금색이 오래 지속되고 변색되지 않도록 보장함으로써 고객의 만족도와 브랜드 평판을 향상시킵니다.

골드 종류	도금 층의 두께	색상 유지 시간
골드 충전	x > 3 미크론	3~5년
골드 베르메일	0.5 < x ≤ 3미크론	1~2년
금도금	0.03 < x ≤ 0.5 미크론	6~12개월

가장 엄격한 도금 두께 기준은 6겹 도금입니다.

Long Durable White Rhodium Plating

To keep your jewelry collections shining for years, the plating process matters. By using advanced rhodium plating technology and maintaining precise layer thickness, each piece achieves exceptional durability, resistance to tarnish, and a lasting bright white finish — ensuring your customers stay satisfied and your brand stays trusted.

골드 종류	도금 층의 두께	색상 유지 시간
White Rhodium Ultra	x > 0.15micron	3~5년
White Rhodium Pro	0.05 < x ≤ 0.15micron	1~3 Years
White Rhodium Plus	0.01 < x ≤ 0.05 micron	3~12 Months

Every option offers reliable protection and a refined appearance — choose the grade that matches your product positioning and customer expectations.

5. SGS Certified 999 Fine Silver Purity Test

Feature: Our raw silver is tested before production to confirm a purity level of 99.9%, meeting the standard for fine silver jewelry.
Advantage: High-purity silver resists tarnishing, is softer for detailed craftsmanship, and provides an authentic “fine jewelry” feel to each design.
Benefit: You can promote your jewelry as genuine 999 silver, add trust for luxury buyers, and meet the expectations of high-end customers.

6. California Proposition 65 Compliance (SGS Certified)

Feature: This test checks for over 800 hazardous substances including lead, mercury, cadmium, and phthalates, which are banned under California’s Proposition 65 law.
Advantage: It allows legal sales in California — one of the strictest U.S. states for consumer product regulations — and prevents product bans or penalties.
Benefit: You can sell freely in all 50 U.S. states and on platforms like Amazon without fear of being flagged, reported, or removed due to toxic material concerns.

7. Responsible Jewelry Council (RJC) Recycled Silver Certification

Feature: Our silver is sourced from RJC-audited suppliers who provide traceable, recycled materials in line with ethical sourcing practices.
Advantage: It supports your sustainability goals and aligns your brand with environmental and social responsibility values increasingly demanded by modern consumers.
Benefit: You can market your jewelry as eco-friendly, appeal to conscious shoppers, and gain an edge when applying for sustainable marketplace badges or B Corp certifications.

8. ECHA SVHC 211 Substance Test Report

Feature: This certification confirms that the product does not contain any of the 211 Substances of Very High Concern (SVHCs) restricted under EU REACH by the European Chemicals Agency.
Advantage: It ensures full chemical compliance, reduces liability, and demonstrates commitment to safe, non-toxic jewelry production.
Benefit: You protect your brand reputation, meet European distributor requirements, and win trust from quality-conscious customers who care about material safety.

9. Nickel Release Test (CTT Certified)

Feature: The jewelry is tested using skin-simulation methods to measure the rate of nickel ion release. We meet EU nickel release limits (EN 1811 standard).
Advantage: This guarantees the jewelry is suitable for individuals with nickel allergies — a common cause of skin irritation from fashion jewelry.
Benefit: You can confidently label your products as “nickel-free” or “hypoallergenic,” expanding your target market and reducing return rates due to allergic reactions.

10. 3.0μm Vermeil Gold Plating Thickness Verification

Feature: Independent lab measurement confirms our gold layer is at least 3.0 microns thick — qualifying as vermeil according to U.S. Federal Trade Commission (FTC) guidelines.
Advantage: Thicker plating means better durability, longer color retention, and added value for premium jewelry lines.
Benefit: You gain a legitimate basis to position your products as fine vermeil jewelry, elevate your brand image, and attract customers seeking luxury without the full gold price.

11. GTC Certified Moissanite Gemstone Authenticity

Feature: Each moissanite stone is tested for refractive index, thermal conductivity, and visual clarity using gemological standards.
Advantage: This ensures that your stones are not only authentic but also exhibit the brilliance and sparkle expected from high-quality moissanite.
Benefit: You offer your customers full confidence in the gemstones they’re buying — reducing doubts, returns, and increasing satisfaction.

12. 925 Silver & CZ Hook Earring Quality Certificate

Feature: These earrings are tested and certified by national-level authorities for 925 sterling silver content, plating quality, and cubic zirconia setting security.
Advantage: It assures you that the product is structurally sound, made from certified materials, and export-compliant for regulated markets.
Benefit: You can promote your designs with full transparency, meet import regulations, and give B2B buyers and end-customers peace of mind.

Do you have any questions about Jewelry certificates?

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