There is no essential difference in the gold quality of brand-name jewelry. Whether it is brand-name jewelry or non-brand jewelry, as long as it is gold jewelry purchased through formal channels, its purity should meet the national standards. According to the national standard GB11887-2012, the purity of gold jewelry in regular channels is usually not a big problem. It should be noted that the price of gold jewelry in brand-name jewelry stores is usually higher than that in non-brand jewelry stores or wholesale channels, mainly because brand-name jewelry stores need to cover additional costs such as brand operation and marketing. Therefore, if buying gold jewelry pays more attention to preservation rather than brand effect, it may be more economical to choose non-brand jewelry stores or wholesale channels.