Does Moissanite Pass Diamond Tester? Unveiling the Truth

High Quality Gra certificated colorless Moissanite Stone


In the ever-evolving world of gemstones and jewelry, the distinction between natural diamonds and alternative gems has become a topic of interest and discussion. One question that often arises is, “Does moissanite pass a diamond tester?” This query stems from the increasing popularity of moissanite as a diamond alternative due to its remarkable brilliance and affordability.

In this comprehensive article, we delve into the nuances of moissanite and diamond testing, shedding light on whether moissanite can truly stand up to a diamond tester.

Moissanite: The Brilliant Contender

Understanding Moissanite

Moissanite, a naturally occurring mineral, was first discovered in meteorites by Nobel Prize-winning scientist Henri Moissan. However, most moissanite available in the market today is lab-created. Its exceptional brilliance and fire make it a highly sought-after alternative to diamonds.

With its impressive hardness ranking second only to diamonds on the Mohs scale, moissanite is indeed a durable option for jewelry.

Moissanite vs. Diamond: Unveiling the Ultimate Brilliance- Gemslegend Jewelry

The Diamond Tester Dilemma

Diamond testers, primarily based on thermal conductivity, are commonly used to distinguish between diamonds and their alternatives. Since diamonds are exceptional heat conductors, they disperse heat rapidly and remain cold when exposed to a heat source.

This characteristic forms the basis of diamond testers, which detect this heat conductivity difference. However, here’s where the intrigue lies – moissanite, despite its brilliance and durability, also exhibits high thermal conductivity. This similarity can lead to the erroneous conclusion that moissanite is a diamond when subjected to a standard diamond tester.

moissanite engagement ring

Factors Influencing Test Results

Electrical Conductivity

While the diamond tester is predominantly based on thermal conductivity, a crucial distinction exists in electrical conductivity. Unlike diamonds, moissanite exhibits electrical conductivity, which is not observed in genuine diamonds.

This distinction presents a more reliable method of differentiation, but unfortunately, traditional diamond testers do not measure electrical conductivity.

Refractive Index

Another aspect that sets moissanite apart is its refractive index. The refractive index determines how light is bent or refracted as it enters the gem. Moissanite’s refractive index is higher than that of diamonds, leading to a “rainbow effect” or spectral flashes of color.

This phenomenon is not typically observed in diamonds. While refractive index measurements can be conducted, they often require specialized equipment not commonly found in standard diamond testing devices.

moissanite band

Enhanced Testing Methods

Advanced Diamond Testers

As the demand for moissanite and other diamond alternatives rises, the jewelry industry has responded with advanced testing methods. Sophisticated diamond testers that incorporate both thermal and electrical conductivity measurements offer more accurate results.

These testers can identify the subtle differences between moissanite and diamonds, ensuring that consumers receive precise information about their gemstone.

Professional Gemological Assessment

For individuals seeking absolute certainty about the authenticity of their gemstones, professional gemological assessments are invaluable. Gemologists utilize a combination of visual examination, advanced testing equipment, and their expertise to accurately identify gemstones.

While this approach might not be as immediate as handheld testers, it provides a comprehensive and trustworthy evaluation.


In the quest to answer the question, “Does moissanite pass a diamond tester?” the answer is not straightforward. While traditional diamond testers may yield inconclusive results due to the similar thermal conductivity of moissanite and diamonds, advancements in testing methods and the consideration of additional factors such as electrical conductivity and refractive index have paved the way for more accurate distinctions.

If you’re a consumer looking for assurance, opting for professional gemological assessment or using advanced diamond testers can provide you with reliable information about your gemstone. Whether you’re choosing a diamond or a moissanite, it’s essential to make an informed decision based on comprehensive testing and expert guidance.

In the end, the enduring charm of diamonds and the growing popularity of moissanite showcase the diverse beauty the gemstone world has to offer. Remember, it’s not just about passing a test – it’s about finding the perfect gem that resonates with your style and preferences.

At Gemslegend Jewelry, we are proud to offer you a collection of moissanite engagement rings and moissanite wedding bands that embody the essence of everlasting love. Choose moissanite to create a symbol of your unique journey and a testament to the enduring beauty of your commitment.

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