A certificate on a factory website is easy to fake. A real one takes years to earn, requires independent third-party audits, and has an expiry date you can verify. Before you partner with a jewelry manufacturer, knowing which certifications actually matter and how to confirm they are legitimate is one of the most practical things you can do to protect your brand.
Quality and Safety Certifications
These are the certifications that speak directly to product quality and consumer safety. For any brand selling into the US or EU market, they are non-negotiable.
1. ISO 9001
ISO 9001 is the international standard for quality management systems. A certified jewelry manufacturer has demonstrated that their entire manufacturing processes are structured, documented, and consistently controlled. It does not certify the product itself, but it certifies that the system producing that product is disciplined and repeatable. For brands that need consistent output across large order runs, this is one of the first boxes to tick.
2. SGS Testing
SGS is one of the world’s leading testing and inspection organizations. An SGS-tested product has been evaluated by an independent laboratory for material composition, chemical content, and physical performance. In the jewelry industry, SGS test reports are commonly used to verify metal purity, plating thickness, and the absence of restricted substances.
3. REACH Compliance
REACH is the EU’s chemical safety regulation. For jewelry brands selling in Europe, this is a hard requirement. REACH restricts the use of hazardous substances including certain heavy metals and chemical compounds in consumer products. A compliant manufacturer will be able to provide test reports confirming their products fall within REACH limits.
4. California Proposition 65
Prop 65 requires businesses to provide clear warnings before knowingly exposing consumers in California to hazardous chemicals. For jewelry specifically, this covers substances like lead and cadmium. If you sell or plan to sell in the US market, your manufacturer needs to demonstrate Prop 65 compliance.
5. Nickel Directive Compliance
The EU Nickel Directive restricts the release of nickel from items that come into prolonged contact with skin, which includes virtually all jewelry. Nickel is a common allergen, and brands that sell into Europe must ensure their products meet the permitted nickel release limits. Ethically sourced jewelry destined for sensitive-skin consumers in particular should come with documented nickel testing.
6. RoHS
RoHS (Restriction of Hazardous Substances) restricts specific hazardous materials in jewelry. This includes lead, mercury, cadmium, and hexavalent chromium. RoHS-compliant jewelry often uses safer alternatives like sterling silver, 304/316L stainless steel, or C27000 brass, rather than cheaper, toxic alloys.
Ethical and Environmental Certifications
Quality certifications tell you a product is safe. Ethical certifications tell you the people and planet behind that product were treated responsibly. For brands with a sustainability narrative or those supplying to retailers who enforce ethical sourcing policies, this category is equally important.
1. SA8000
SA8000 is widely regarded as the most rigorous labor standard in global manufacturing. Developed by Social Accountability International, it covers the prohibition of child labor and forced labor, health and safety standards, freedom of association, fair wages, reasonable working hours, and anti-discrimination practices. Major brands including Disney, Gucci, and Timberland require SA8000 compliance from their suppliers. If your jewelry manufacturer holds SA8000 certification, it means their factory has been independently audited against these criteria.
2. BSCI and SMETA Audits
BSCI (Business Social Compliance Initiative) and SMETA (Sedex Members Ethical Trade Audit) are two of the most widely recognized social compliance audit frameworks in global supply chains. BSCI audits cover 13 performance areas and produce a graded result, making them particularly common among European retailers. SMETA audits, organized by Sedex, can be conducted across two or four pillars, covering labor standards, health and safety, environmental practices, and business ethics. Brands supplied by manufacturers audited under these frameworks benefit from independent verification that working conditions in the factory meet internationally recognized standards.
3. Responsible Jewellery Council (RJC)
RJC is the jewelry industry’s own global standard-setting body, founded in 2005 by organizations including De Beers, Tiffany & Co., and Cartier. RJC certification covers business ethics, human rights, labor standards, health and safety, and environmental performance across the entire supply chain. Certification requires an independent third-party audit and must be renewed every three years, with a surveillance audit conducted between 12 and 18 months from the certification start date.
4. Environmental Management Certifications
Beyond ethical labor practices, responsible manufacturers should demonstrate environmental accountability. This can include government-issued environmental licenses, factory environmental approval documentation, or compliance with local environmental discharge standards. Responsible production in the jewelry industry which involves chemicals, plating processes, and metal waste requires demonstrable environmental management, not just a commitment on a website.
How to Check That Certificates Are Real and Current
Here is how to verify properly.
Cross-check with the issuing body. RJC maintains a publicly searchable member directory at responsiblejewellery.com where you can look up any certified factory by name. ISO certifications can be verified through the issuing certification body listed on the certificate. SGS and BSCI reports can be cross-referenced directly with those organizations. If a manufacturer’s certification number does not appear in the relevant database, treat it as unverified.
Check expiry dates. Certifications are not permanent. RJC certification lasts three years. ISO 9001 typically requires annual surveillance audits and a three-year recertification cycle. BSCI audit reports have validity periods. A certificate that expired two years ago is not evidence of current compliance.
Request full audit reports, not just certificate images. A certificate image confirms a factory passed at some point. A full audit report tells you what was assessed, what corrective actions were required, and how the factory performed across each criterion. Credible manufacturers have no reason to withhold audit reports. If a supplier offers only the image and deflects on the full report, that gap deserves attention.
Star Harvest: A Certified Jewelry Manufacturer
For brands that need certification confidence across both quality and ethics, Star Harvest is a jewelry manufacturer that has done the hard work of earning and maintaining the full stack.
Star Harvest holds RJC, SGS, ISO 9001:2015, SA8000, and BSCI certifications. All products comply with California Proposition 65 and EU REACH standards, with full traceability from raw material to finished piece. The factory is also an officially authorized Swarovski crystal partner, adding an additional layer of material certification for brands that use premium stones.
On the quality side, Star Harvest’s 9-stage QC process includes plating thickness tests, 48-hour salt spray durability tests, and component inspection for every incoming material batch all verified by an in-house laboratory equipped with German precision testing equipment.
For jewelry brands that need to demonstrate ethically sourced jewelry credentials to their own retail partners, investors, or end customers, Star Harvest’s certification portfolio provides documentation that holds up to scrutiny.
Conclusion
Certifications are the most reliable signal a jewelry manufacturer can send that their quality and ethical standards have been tested by someone other than themselves. The right framework to look for covers both product safety (ISO 9001, SGS, REACH, Prop 65) and ethical production (RJC, SA8000, BSCI). A manufacturer with nothing to hide will hand certification reports over without hesitation.