周生生足金挂坠，检测出铁银钯！

Core Viewpoint - A customer in Guangdong, Ms. Li, experienced issues with a newly purchased gold pendant from Chow Sang Sang, leading to concerns about the gold content after the pendant was scratched and showed white marks [1][16]. Group 1: Customer Experience - Ms. Li purchased the pendant on January 5, 2026, believing in the brand's quality assurance [3][18]. - After wearing the pendant for one day, it was scratched and revealed white marks, prompting Ms. Li to question its gold content [5][20]. - Initial requests for a return were denied by the store, which claimed the product's gold purity was guaranteed [19][26]. Group 2: Testing and Results - Ms. Li conducted multiple tests on the pendant, revealing varying gold content levels: the highest was 99.99%, while the lowest was 64.37%, indicating a discrepancy of 35.62% [10][24]. - The tests also indicated the presence of other metals such as iron, silver, and palladium in the pendant [11][25]. Group 3: Company Response - Chow Sang Sang stated they would allow a return out of goodwill, despite initially claiming the issue was not a quality problem [12][26]. - The company suggested that Ms. Li could have the pendant tested at a recognized authority to verify the results [26][30]. Group 4: Regulatory Involvement - Local regulatory authorities have intervened in the dispute, recommending that the pendant be sent to a third-party professional institution for formal evaluation [14][30].