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Gold hallmarking standards vary significantly from country to country. This guide explains the key purity marks used in the UK, Europe, the Middle East, Asia, and the US — and why independent testing matters regardless of origin.

Want to test gold at home without acid? This beginner's guide explains how electronic gold testers work, how to use one step by step, and when it's time to upgrade to a professional-grade device.

Not sure which Auracle gold tester is right for your business? We compare the Auracle, Auracle Analyser, and Auracle Pro side by side — features, use cases, and value — so you can make the right choice.