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Core Viewpoint - A recent rumor regarding impurities in gold bars sold by a state-owned bank has raised market concerns, but the bank clarified that the gold content is 99.99% and the suspected impurities are external attachments, confirmed by a third-party authority [1] Group 1: Market Concerns and Consumer Awareness - The incident has heightened consumer worries about the authenticity of gold products in the market, especially amid rising gold prices [1] - Industry experts recommend consumers purchase gold from reputable channels and be cautious of low-price promotions [4] - Consumers should check for clear markings and packaging, retain purchase receipts, and if buying online, record the unboxing and testing process [4] Group 2: Methods of Identifying Fake Gold - Common methods of gold fraud include structural and material counterfeiting, such as hollow filling and using alloys to impersonate gold [3] - Structural fraud often involves filling hollow items with cheaper materials, while material fraud may use alloys like copper or zinc to mimic gold [3] - A more sophisticated fraud method is "mixed gold," where metals with similar densities to gold are added, making detection difficult without specialized equipment [3] Group 3: Detection Techniques for Consumers - Consumers can identify genuine gold by examining its color, weight, hardness, and sound [4] - True gold has a uniform yellow color, a significant weight due to its density of 19.3 grams per cubic centimeter, and produces a dull sound when dropped, unlike fake gold which sounds metallic [4] - For further verification, consumers can take their gold to certified testing facilities for spectral and density analysis, or conduct destructive tests to check for color changes when burned [5]