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The MGS Precious Metals Blog

Manhattan Gold & Silver is an industry leader in precious metal pricing and refining with more than 30 years of experience. During our time in the business, we’ve found the topic of precious metals to be a vast and interesting one. Here on our precious metals blog, we write in-depth posts about the science of precious metal refining, historical and modern uses for precious metals, market news, and much more. Subscribe to our RSS feed to stay current, and discuss the latest posts on our Facebook page.

Ultrasonic Testing Now Available at MGS

July 10, 2013 01:31

Some months ago, we wrote a blog post about several counterfeit gold bars that were discovered in the Diamond District. These bars were gold on the outside with official stamps and serial numbers, but filled with tungsten. The outer gold coating allowed the fake bars to pass several common assays including the scratch test and x-ray test.

Ultrasonic gold assay – MGS

In the interest of protecting our loyal customers, Manhattan Gold & Silver now offers ultrasonic testing, which can detect complex counterfeits like tungsten-filled gold bars. Our new machine (pictured) sends an ultrasonic pulse through the gold bar. If there are changes in the consistency of the metal (i.e. changing from pure gold into tungsten), the frequency of the ultrasonic pulse also changes. The ultrasound machine detects any changes in the ultrasonic pulse and shows whether or not a bar is really made of solid gold.

An ultrasound test is a much quicker and convenient alternative to melting or drilling. No matter what kind of precious metal you bring in, we can still deliver the super-fast turnaround time that we’ve become famous for. Walk-in to our storefront location or contact us to learn more about our ultrasound assay.

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