Are Diamond Testers Accurate?

Are Diamond Testers Accurate?

Ever thought about whether your pricey jewelry is worth it or not? The availability of more real and fake diamonds on the market can lead to enormously valuable or even worthless pieces of jewelry. Fortunately, the advancement of technology is making things more accessible with new diamond testers that have proved helpful for exact situations. But how do these diamond testers work, and how reliable are they? Read on to learn more about diamond testers.

What Is A Diamond Tester?

A diamond tester is a device used to check the authenticity of a specimen stone by testing the thermal or electrical conductivity. If the specimen stone meets natural diamond tested properties, it will indicate or give an audible signal. Diamond testers are portable, thanks to their small body sizes.

How Does A Diamond Tester Work?

A thermal conductivity tester is a typical gadget that uses a needle-like metal tip to heat the specimen stone. The rate at which heat conductivity takes to circulate through the rock will determine if it is a natural diamond or not. Even better, visual reading of the tester or a beeping sound makes work easier. Thermal conductivity testers rely on the fact that gemstones, glass, or cubic zirconia conduct heat differently. Therefore, diamond testers are always accurate about their findings. New modifications have made diamond testers more sophisticated. The new electrical devices that are available in the market can identify synthetic diamonds. However, their findings are based on the same principles as thermal diamond testers, with electrical conductivity as the main difference.

How Reliable Are Diamond Testers?

Diamond testers are ever-accurate tools. They help identify authentic diamonds at an exact moment. Unfortunately, thermal conductivity testers can be faulty when moissanite is at hand. This is because moissanite and diamond conduct heat at a similar rate. But that shouldn't freak you out because that's where electrical conductivity testers come in handy. Despite the two stones sharing the same thermal conductivity, moissanite and diamonds have different rates of conducting electricity. And that is a problem solved.

Available Types Of Diamond Testers

The market today offers numerous types of diamond testers. The different types include:
  • The Conventional or Thermal Diamond tester
  • Electrical conductivity diamond tester
  • Diamond indenter hardness tester
  • Fluorescence diamond testing


If you are looking forward to buying diamonds, work with a reliable diamond company who has a reputation for honesty and integrity. At Mervis Diamond Importers, we value our customer needs by providing natural mined diamonds and lab grown diamonds accompanied by recognized reports form the world’s leading laboratory authorities.Visit our online product page or contact us for more information.