Oahlan Quality Evidence Center
Jewelry testing that buyers can inspect, question, and verify.
A commercial claim becomes useful only when it is connected to a named sample, report number, test scope, result, date, and responsible organization. This page presents Oahlan's available jewelry quality testing and supplier assessment evidence with those boundaries intact.
What a test report proves, and what it does not.
Oahlan's jewelry quality evidence includes a 2026 test-scope page identifying OAHLAN-branded tungsten carbide ring samples for assessment under REACH Regulation (EC) No 1907/2006, a complete 2021 upstream tungsten-ring nickel-release report with a PASS conclusion, a supplied 925 silver XRF screen displaying nickel (Ni) at 0.000% and cadmium (Cd) at 0.000% for that measured sample, and a 2026 SGS/Alibaba Verified Supplier assessment of Guangzhou Oahlan Jewelry Co., Ltd. Each document has a different purpose. The REACH scope page identifies the sample and requirements but, without the later result pages, does not alone prove a PASS. The CTT report records three nickel-release results below the stated 0.5 microgram per square centimeter per week limit, but its applicant is an upstream material factory rather than Oahlan. The XRF record supports a nickel-free and cadmium-free production-screening result for the displayed measurement, not a universal conclusion for every silver product or batch. The SGS assessment supports factory identity, production, inspection, and traceability capabilities; it is not a chemical test for a particular product.
- IdentityApplicant, manufacturer, trademark, and sample name must match the claim.
- ScopeThe regulation, substance, test method, and limit define what was assessed.
- ResultA conclusion must come from the result page belonging to the same report number.
- TraceabilityA report becomes commercially useful when it can be connected to the ordered material and batch.
Primary evidence presented with its original scope.
2026 tungsten carbide ring REACH test scope
Report: S260323058001-1
Date: March 26, 2026
Sample: Tungsten Carbide Rings
Trademark: OAHLAN
The supplied page states that the samples were tested according to ECHA-related requirements under REACH Regulation (EC) No 1907/2006.
Scope note: This is page 1 of 10 and directs readers to later pages for the result. It confirms the sample identity and test scope, not a stand-alone PASS conclusion.
View supplied report page
REACH Annex XVII nickel-release test
Report: CTT2110012108EN
Date: October 27, 2021
Method: EN 1811:2011+A1:2015 and EN 12472:2020
Conclusion: PASS
The three reported results were not detected, 0.22, and 0.34 micrograms per square centimeter per week, below the report's 0.5 limit.
Scope note: The applicant is ZHENGTONG SPECIAL MATERIAL FACTORY, not Oahlan. This is upstream sample evidence and is not presented as direct proof for every Oahlan product or production batch.
Open complete 3-page report2026 SGS/Alibaba supplier assessment
Report: 492653900_P+T
Report date: June 12, 2026
Validity: June 13, 2026 to June 12, 2027
Company: Guangzhou Oahlan Jewelry Co., Ltd.
The report records an assessed 2,800 m2 site, five production lines, two quality-control inspectors, finished-product inspection, and lot traceability for main raw materials.
Scope note: A supplier assessment supports company and operational capability. It is not a chemical-compliance result for a particular ring, earring, necklace, or batch.
Open complete assessment reportREACH is a legal framework, not a universal product badge.
REACH is the European Union Regulation on the Registration, Evaluation, Authorisation and Restriction of Chemicals, identified as Regulation (EC) No 1907/2006. The European Chemicals Agency, or ECHA, administers central parts of the framework, while authorities in EU member states carry out enforcement. Its purpose is to protect human health and the environment through obligations that can include substance registration, supply-chain communication, safety assessment, authorization, and restrictions on hazardous substances.
Jewelry is an article placed in prolonged contact with the skin, so restricted substances can be commercially important. Nickel release is one relevant example. Depending on the product and its materials, buyers may also request evidence for lead, cadmium, substances of very high concern, or other destination-market requirements. The correct test program should be selected for the actual product, market, materials, coatings, and intended use.
The phrase "REACH certified" can be misleading when it implies that ECHA has issued one certificate covering an entire factory or catalog. More precise language is "tested against the stated REACH requirement" or "supported by a REACH compliance test report." A report is strongest when the product description, trademark, report number, method, result, conclusion, and production traceability all align.
| Document | Directly supports | Does not automatically support | Commercial use |
|---|---|---|---|
| OAHLAN 2026 test scope page | OAHLAN trademark, tungsten carbide ring sample, manufacturer, date, and REACH test scope | A PASS conclusion without the missing result pages | Confirm sample identity; request the complete ten-page report before a compliance decision |
| CTT 2021 nickel-release report | Three named upstream tungsten ring samples passed the stated nickel-release requirement | Every Oahlan model, coating, supplier, or current batch | Upstream material reference to be paired with current product and batch evidence |
| SGS 2026 supplier assessment | Assessed factory identity, production lines, QC staffing, finished-product inspection, and raw-material traceability | Chemical composition or restricted-substance compliance of an individual product | Supplier due diligence and operational capability review |
| 925 silver in-process XRF screen | The displayed 92.728% Ag measurement lists Ni at 0.000% and Cd at 0.000% | Independent laboratory certification or a nickel-free and cadmium-free guarantee for every product and batch | Incoming, in-process, or exception screening within a broader quality system |
From material receipt to export documentation.
Define the requirement
Market, product type, substrate, plating, skin-contact surfaces, restricted substances, sample plan, and acceptance criteria are agreed before production.
Control material identity
Material declarations, supplier records, lot identification, and appropriate incoming or in-process checks connect raw materials to the order.
Inspect the product
Dimensions, finish, stone setting, plating appearance, assembly, branding, packaging, and order-specific defects are checked against the approved sample.
Use scoped testing
Representative samples are sent for the agreed laboratory program when required. The report is reviewed for identity, method, result, and complete pages.
Release the batch
Inspection outcomes, corrective actions, packaging status, and required documents are checked before shipment release.
Preserve traceability
Purchase order, approved sample, material lot, inspection record, and report reference remain connected for repeat orders and buyer review.
Review changes
A new coating, supplier, material, color, or construction can change the evidence scope and may require new validation rather than reuse of an old report.
Communicate precisely
Product pages and buyer documents state what was tested without turning a limited sample result into an unlimited catalog promise.
925 silver screening for nickel-free and cadmium-free production targets.
Nickel and cadmium are priority control substances for skin-contact jewelry. In the supplied XRF record showing 92.728% silver, the instrument table visibly displays Ni at 0.000% and Cd at 0.000% for the measured sample. This supports Oahlan's nickel-free and cadmium-free production-screening target for 925 silver jewelry. A second supplied reading displays 92.856% silver and related alloy elements.
X-ray fluorescence, commonly called XRF, can rapidly estimate the elemental composition of a metal surface. It is useful for material sorting, incoming inspection, alloy checks, and investigation of abnormal results. Instrument calibration, detection capability, test duration, surface plating, geometry, sampling location, and operator method can influence a reading. A photographed screen is not a substitute for a signed third-party report, and one measurement does not establish the composition of every item in a batch. Buyers requiring formal nickel, cadmium, or silver-fineness evidence should define the laboratory method, detection limits, sample plan, and acceptance criteria before production.
Displayed result on the supplied 92.728% silver XRF record.
Displayed result on the supplied 92.728% silver XRF record.
Supports in-process material screening. Order-specific third-party testing is required when a buyer needs a formal compliance conclusion.
What to request before approving a wholesale jewelry order.
- Define the destination market. Compliance requirements depend on where and how the product will be sold.
- Identify every material. Record substrate, binder, solder, plating layers, stones, adhesive, inlay, and skin-contact components.
- Match the sample. Product name, model, color, material, and trademark in the report should correspond to the ordered item.
- Check the full report. Confirm that all pages share the same report number and include the method, result, conclusion, and laboratory details.
- Read the applicant field. A report from an upstream material factory has a different evidentiary role from a branded finished-product report.
- Confirm current production. Ask whether the tested formulation, supplier, coating, and process remain unchanged.
- Agree on sampling. Define how many pieces, which sizes and colors, and which production stage will be checked or tested.
- Set measurable limits. Replace phrases such as "premium quality" with dimensions, color standards, defect limits, and test criteria.
- Connect the batch. Keep purchase order, material lot, inspection record, approved sample, and laboratory report linked.
- Control change. Treat a new alloy, coating, supplier, adhesive, or component as a possible reason to revalidate.
Questions about jewelry testing and compliance documents.
Is REACH a certification issued by ECHA?
REACH is an EU regulation, not a universal product certificate issued by ECHA for an entire catalog. Laboratories can test named samples against specified REACH restrictions or requirements. The resulting report is scoped to the listed sample, method, substances, limits, and date.
Does the 2026 OAHLAN tungsten report show a PASS?
The supplied first page identifies OAHLAN-branded tungsten carbide ring samples, the manufacturer, report number, date, and REACH-related test requirements. It states that results appear on later pages. Because those result pages were not supplied here, this page does not claim PASS from page 1 alone.
What does the CTT nickel-release report show?
Report CTT2110012108EN records three tungsten ring sample results of not detected, 0.22, and 0.34 micrograms per square centimeter per week against a stated 0.5 limit. The conclusion is PASS. The applicant is an upstream material factory, so the result should not be expanded to every Oahlan product without matching product and batch evidence.
What does the SGS supplier assessment verify?
The 2026 assessment verifies information about Guangzhou Oahlan Jewelry Co., Ltd. and records operational capabilities including the assessed site, production lines, QC staffing, finished-product inspection, and raw-material lot traceability. It does not replace product chemical testing.
Can Oahlan provide documents for a specific wholesale order?
Documentation support can be planned according to the product, destination market, order size, material, coating, and buyer requirements. Buyers should request the required test scope before sample approval so the correct product and method can be selected.
Does the supplied 925 silver test show no nickel and no cadmium?
The supplied XRF screen showing 92.728% silver visibly lists nickel (Ni) at 0.000% and cadmium (Cd) at 0.000% for that measured sample. This supports a nickel-free and cadmium-free screening result for the displayed measurement. It should not be expanded into a universal guarantee for every product or batch without representative, order-specific testing.
Does an XRF silver reading prove every item is 925 sterling silver?
No. XRF is useful for rapid elemental screening, but one photographed reading is not a universal batch certificate. Formal evidence requires an agreed method, representative sampling, calibrated equipment, interpretation of surface layers, and documented results.
Why does the applicant name matter?
The applicant identifies the party that submitted the sample. An upstream supplier report may support a material reference, while a report naming the finished product and relevant brand gives a more direct connection. Neither should be described beyond its documented scope.
When should a product be retested?
Retesting may be appropriate when the material, supplier, coating, adhesive, color system, construction, regulation, buyer requirement, or production process changes. Buyers may also set periodic or batch-based testing rules based on risk.
Build the document plan before the production order.
Send Oahlan your destination market, product construction, material requirements, testing scope, and packaging standard. The team can align sampling, production controls, and available documentation before bulk approval. Review the 925 silver factory or wholesale tungsten rings for the relevant production route.
