Core Viewpoint - The implementation of the national standard GB/T 36128-2018 has established clear weight tolerances for jewelry products, aiming to protect consumer rights and ensure fair trading practices in the jewelry market [2][3][4]. Group 1: Background and Implementation of the National Standard - Prior to the introduction of the national standard, consumers faced difficulties in asserting their rights due to a lack of unified weight tolerance standards, leading to widespread issues in the jewelry market [2]. - The GB/T 36128-2018 standard was officially released on May 14, 2018, and came into effect on December 1, 2018, marking the first time a national standard specifically addressed weight tolerances for precious metal jewelry [2][3]. - The standard was developed by authoritative technical institutions to ensure its scientific and practical applicability, covering products weighing up to 200 grams [2][3]. Group 2: Key Provisions of the National Standard - The standard specifies allowable weight deviations for different weight categories of jewelry, such as ±0.002 grams for items weighing ≤1 gram, ±0.004 grams for items between 1 and 10 grams, and ±0.01 grams for items between 10 and 200 grams [3]. - Measurement equipment must meet strict accuracy requirements, with scales for items weighing ≤1 gram needing a precision of 0.1 milligrams, and those for items over 10 grams requiring a precision of at least 1 milligram [3]. Group 3: Current Market Practices and Regulatory Actions - Despite the standard's implementation, some small jewelry stores and online retailers still engage in practices that violate the standard, such as using inaccurate measuring devices and unclear product labeling [4]. - Regulatory authorities have increased market oversight, with instances of fines and penalties imposed on businesses found to be in violation of the weight standards [4]. Group 4: Consumer Guidance - Consumers are advised to follow three steps to protect their rights: check product labels for accurate weight, request on-site measurement with compliant scales, and retain purchase receipts and measurement reports [5]. - Understanding and utilizing the national standard can empower consumers to ensure they receive fair value for their jewelry purchases, thereby enhancing their shopping experience [6].