The best protection against fake gold & silver bullion and counterfeit coins is buying from reputable bullion dealers with established histories, transparent pricing, and clear return policies. Counterfeit risk increases when buyers chase unusually cheap gold or silver from unknown sellers, unverified marketplace accounts, or private sellers without references.

Bullion testing should involve multiple verification methods. Start by comparing the item’s weight, dimensions, design, lettering, edge, and security features with the mint or manufacturer’s official specifications. Depending on the product, stackers may also use magnet tests, specific-gravity testing, ping or resonance testing, and comparison with a known genuine coin.

For higher-value purchases, electronic precious-metal verifiers such as a Sigma Metalytics tester can provide another useful layer of authentication. Ultrasonic testing, XRF analysis, or professional assay may be appropriate for larger bars or questionable products. Thick gold bars deserve additional scrutiny because counterfeiters may attempt to conceal tungsten or other materials beneath a thick genuine-looking gold surface, that XRF guns can't read through.

No single bullion-testing method is conclusive. Some counterfeit coins and bars can pass an individual test, so reliable authentication combines reputable sourcing, product knowledge, official specifications, documentation, and multiple testing methods. If there is still doubt, have the bullion examined by a reputable coin shop, dealer, grading service, refiner, or professional assayer before accepting or reselling it.

For a more detailed explanation of counterfeit coins, bullion-testing methods, and the tools you can use to authenticate precious metals, read my guide:
https://www.internationalstacker.com/members-content/how-to-protect-against-fakes

Tools I use to help verify precious metals and support the channel:
Pocket Pinger—for compatible coins and rounds:
https://tinyurl.com/t7kd24xe

Sigma Metalytics Verifier—coupon code CRABMAN:
https://tinyurl.com/tjaw7nae

Disclosure: These may be affiliate links, meaning I may earn a commission at no additional cost to you. No single testing method should be treated as conclusive.

Not financial advice. Stay stacked!