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Serial Numbers on Gold Bars: What They Mean and Why They Matter

When you buy a gold bar, you’ll notice a series of numbers and letters stamped [...]

Tungsten-Filled Gold Bars: Why They Exist and How to Detect Them

Tungsten-filled gold bars are one of the most sophisticated counterfeiting threats in the precious metals [...]

Ultrasound Testing for Gold Authenticity: How Sound Waves Detect Fake Gold

Counterfeit gold is a real problem, and it has grown more sophisticated alongside the technology [...]

How to Acid Test Gold at Home: A Complete Step-by-Step Guide

If you’ve ever picked up a gold piece at an estate sale, inherited jewelry from [...]