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Sigma Metal Verification

Authenticity You Can Trust

At Gold & Silver Spot, authenticity is our highest priority. Every precious metal product we buy, sell, or ship is carefully inspected and tested to help ensure our customers receive genuine investment-grade bullion.

To maintain the highest standards of quality and confidence, we utilize advanced Sigma Metalytics Precious Metal Verifier technology as part of our authentication process.

What Is Sigma Metalytics?

The Sigma Metalytics Precious Metal Verifier is a non-destructive testing system designed specifically for precious metals. It uses electromagnetic technology to evaluate the electrical resistivity of a metal, allowing us to compare the results against the expected values for genuine gold, silver, platinum, and other precious metals.

Unlike acid testing or drilling, Sigma testing does not damage your bullion. Coins and bars remain sealed, intact, and in their original condition during the verification process.

How Our Verification Process Works

Every eligible bullion product is inspected through a multi-step authentication process:

  • Visual inspection for weight, dimensions, design, and mint markings.

  • Examination for signs of tampering, alteration, or counterfeit characteristics.

  • Verification using Sigma Metalytics technology.

  • Additional measurements and testing when necessary.

  • Final quality inspection before packaging and shipment.

This process helps ensure every product meets our standards before it reaches our customers.

Why We Use Sigma Technology

Sigma Metalytics technology offers several important advantages:

  • Completely non-destructive testing

  • No chemicals or acids required

  • Fast and reliable verification

  • Safe for encapsulated and sealed products

  • Helps detect many counterfeit products

  • Suitable for gold, silver, platinum, and other precious metals

By incorporating Sigma testing into our quality control procedures, we provide an additional layer of confidence for our customers.

Products We Verify

Our verification procedures are commonly performed on:

  • Gold bullion coins

  • Silver bullion coins

  • Platinum bullion

  • Gold bars

  • Silver bars

  • Investment-grade bullion products

  • Selected numismatic items when appropriate

Testing methods may vary depending on the product's size, packaging, and composition.

Our Commitment to Quality

Every shipment from Gold & Silver Spot is handled with care. Before an order leaves our facility, our team performs a final inspection to confirm that the products match your order and meet our quality standards.

Our goal is to provide customers with genuine precious metals backed by professional handling and careful verification procedures.

Important Information

While Sigma Metalytics is an industry-recognized authentication tool, no single testing method should be relied upon in isolation. Depending on the product, additional verification methods—including precise weight and dimensional measurements, visual inspection, and other professional testing techniques—may also be used as part of our authentication process.

Using multiple verification methods provides greater confidence in the authenticity and quality of precious metal products.

Buy with Confidence

Whether you are purchasing a single ounce of gold or building a diversified precious metals portfolio, you can shop with confidence knowing that quality and authenticity are central to everything we do.

At Gold & Silver Spot, we are committed to delivering genuine precious metals, professional service, and a secure buying experience for every customer.

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