California Proposition 65 Testing Process for Simulated Jewelry
Date：2026-03-13 10:04:10 Classification
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Imitation jewelry is a key product category regulated under California Proposition 65, primarily because its metal alloys, coatings, imitation diamonds, and plastic components are prone to containing heavy metals such as lead and cadmium.
I. Processing Procedure
Step 1: Confirm Testing Items and Standards
Core Items: Total Lead, Total Cadmium.
Special Circumstances: If the jewelry contains plastic, rubber, or soft rubber components (such as imitation leather bracelets or soft rubber pendants), phthalate testing is required.
Standards: Usually refer to the US jewelry standard ASTM F2999 or specific settlement agreement limits in California Proposition 65.
Step 2: Sample Preparation (Critical Step)
Since jewelry is usually composed of multiple materials (e.g., metal chain + imitation diamonds + leather cord), it must be submitted separately for testing by "material" and "color".
Principle: Components of different materials and colors must be tested separately.
Quantity: Prepare approximately 5-10 grams of sample for each material/color. If the sample is very small (e.g., small diamonds), multiple finished products may be required. Example: A necklace with a gold-plated metal chain, clear rhinestones, and a red plastic pendant may need to be tested as three separate samples: the gold-plated metal component, the rhinestones, and the red plastic component.
Step 3: Complete the Application Form and Submit for Testing
Complete the testing application form provided by the laboratory.
Clearly list the names of the components to be tested.
Send the samples to a qualified (e.g., CPSC-accredited) third-party testing organization.
Step 4: Laboratory Testing
Upon receiving the samples, the laboratory will perform the following operations:
1. Pre-treatment: Destructive sample preparation (cutting and grinding the jewelry) to simulate accessible components.
2. Chemical Analysis: Digest the sample with acid and detect heavy metal content using ICP-OES (Inductively Coupled Plasma Optical Emission Spectrometry).
3. Data Evaluation: Compare the test results with the limits set by California Proposition 65.
Step 5: Issue a Report
Test Pass: A valid California Proposition 65 test report will be issued.
Test Failure: The laboratory notifies the product of exceeding the limit. The company must rectify the issue (e.g., change materials, electroplating process) and resubmit for testing.
II. Key Test Items and Limit References
California Proposition 65 is inherently a "notification" law, but in practice, to avoid issuing warning labels, companies typically need to keep hazardous substances within "safe harbor" levels or limits stipulated in litigation settlement agreements.
1. Lead
Testing Objects: Metal substrates, coatings/paints, plastics/rubber, glass/crystal.
Limit References:
Surface Coatings: ≤ 90 ppm (0.009%).
Metal Substrates: Typically requires ≤ 100 ppm or ≤ 300 ppm (specific requirements depend on material and recent settlements; strict compliance recommends keeping it below 100 ppm).
PVC/Plastics: ≤ 200 ppm.
2. Cadmium
Testing Objects: Metal parts, plastic parts.
Limit Reference:
Metal Components: Generally required ≤ 300 ppm.
Surface Coatings: Generally required ≤ 300 ppm.
3. Phthalate
Testing Objects: Soft plastics, rubber, artificial leather.
Limit Reference: ≤ 0.1% (1000 ppm) for each phthalate.
III. Cycle and Cost
Cycle: Typically 5-7 business days.
Cost: Calculated based on the number of test points (material + color combination).
For example: Testing lead and cadmium alone typically costs several hundred RMB per test point. If a product has 3 different materials, the cost is 3 times the cost of a single test point.
IV. Special Notes
1. "Accessibility" Principle
California Proposition 65 primarily focuses on components that consumers may come into contact with while wearing the jewelry. If the internal metal is completely sealed (e.g., a fully enclosed plastic casing), testing the internal metal may not be necessary. However, in imitation jewelry, the metal is usually exposed, therefore testing is mandatory.
2. Warning Labels
If the product passes testing and the content is below the limit, a California Proposition 65 warning label is not required.
If the product contains excessive levels of certain substances, and the company is unwilling or unable to rectify the situation, a clear warning label must be affixed to the product packaging, for example:
"WARNING: This product can expose you to chemicals including lead and cadmium, which are known to the State of California to cause cancer and birth defects or other reproductive harm."
3. Report Validity
California Proposition 65 reports do not have a fixed validity period, but retesting is recommended when regulations are updated, raw materials change, or suppliers are replaced.
4. E-commerce Platform Requirements
For sales on platforms like Amazon, the platform typically requires a valid test report. If the report shows excessive levels and the label is not affixed, the product may be removed from the platform; if the report shows excessive levels but the label is correctly affixed, some platforms allow sales, but this will affect conversion rates. It is recommended to aim for passing the test.
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