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].

如今，该国标实施已近7年，珠宝市场整体规范了不少，但记者近期走访发现，仍有部分商家在打"擦边 球"，尤其是一些小型珠宝店和线上珠宝直播间，主要存在两大问题：一是未按标准要求配备精密天 平，而是用普通电子秤进行测量，导致数据不准确；二是产品标识模糊不清，只简单标注"约XX克"， 不明确注明允差范围，一旦出现重量纠纷，就以此为借口推脱责任。不过值得欣慰的是，市场监管力度 也在不断加强，去年深圳市场监管部门对辖区内的珠宝店开展突击抽检，共发现8款产品存在重量负偏 差超标问题，涉事商家最高被处以15万元罚款；今年3月，上海某线上珠宝店因销售的20克黄金手镯实 际重量差了0.08克，被监管部门责令为消费者退款，并额外赔偿损失。这些案例都清晰表明，珠宝销售 中的"缺斤短两"已不再是无关紧要的"小事"，而是违反国标的违法行为，商家必将为此付出代价。 面对市面上琳琅满目的珠宝首饰，消费者该如何运用国标保护自己的合法权益？其实只需记住"一看二 测三留存" 三个步骤。第一步 "看标识"，购买时先仔细查看产品标签或质量证书，正规产品必须注明准 确重量，不能只模糊标注"约XX克"，部分规范商家还会主动标注允差范围；第二步"现场测"， ...