How Gold Is Tested: A Complete Guide

Whether you're selling old jewelry, gold coins, or luxury watches, understanding how gold is tested can help you feel confident in the evaluation process. Professional buyers use multiple methods to verify authenticity and determine purity.

Checking Hallmarks

The first step is examining stamps such as 10K, 14K, 18K, 22K, or 24K. These markings indicate the gold content but are only one part of the authentication process.

Electronic & XRF Testing

Many professional buyers use electronic testers and X-ray fluorescence (XRF) technology to analyze the composition of precious metals without damaging the item.

Acid Testing

Acid testing remains a trusted method for confirming gold purity. When performed by experienced professionals, it provides highly accurate results.

Weighing the Gold

After purity is confirmed, the item is weighed using precision scales. The final offer is based on weight, karat, current market prices, and any additional value from designer brands or collectible features.

Why Professional Testing Matters

Using multiple testing methods ensures an accurate evaluation and helps sellers understand the true value of their gold before making a decision.