Diamond testers are commonly used to verify the authenticity of jewellery. They are quick, simple, and widely trusted. As moissanite becomes more popular in modern street luxury, a frequent question follows. Does moissanite pass a diamond tester?
The short answer is yes. In many cases, moissanite jewellery will register as a diamond on standard testers. Understanding why requires a closer look at how these tools work and what makes moissanite unique.
What Is Moissanite?
Moissanite is a gemstone composed of silicon carbide. It is visually similar to a diamond but remains a distinct stone with its own structure and optical performance. Modern moissanite used in jewellery is laboratory-created, allowing precise control over clarity, colour, and consistency.
This balance of technology, durability, and design has made moissanite a defining material in contemporary jewellery.
How Do Diamond Testers Work?
Most traditional diamond testers measure thermal conductivity. Diamonds conduct heat extremely well compared to most gemstones. When the probe touches the stone, the device reads how quickly heat moves through it and delivers a result.
These testers are calibrated with diamonds in mind. They are not designed to identify every gemstone individually. Instead, they confirm whether a stone conducts heat in a similar way to a diamond.
Why Moissanite Often Passes a Diamond Tester
Moissanite has very high thermal conductivity. In fact, it is one of the closest gemstones to diamond in this regard. Because of this, many standard diamond testers cannot distinguish between the two.
When tested, moissanite frequently produces a positive diamond reading. This is not a flaw in the stone, but a reflection of how closely its physical properties align with those of diamond.
This characteristic is one reason moissanite has gained recognition as a credible and high-performance alternative rather than a visual imitation.
Can Diamond Testers Tell the Difference?
Basic diamond testers generally cannot differentiate between moissanite and diamond. However, more advanced testing devices can.
Some professional testers combine thermal and electrical conductivity. Moissanite conducts electricity differently from diamond, allowing specialised equipment to identify it accurately. Gemmological laboratories also use magnification and advanced analysis to confirm stone type.
For everyday wear and visual presence, these distinctions are rarely noticeable. To the eye, both stones deliver clarity, brilliance, and impact.
What This Means for Moissanite Jewellery
The fact that moissanite passes most diamond testers reinforces its legitimacy as a premium gemstone. It confirms durability, performance, and material quality rather than diminishing its value.
For modern jewellery, especially within street luxury design, moissanite offers a strong presence, consistency, and confidence. It allows bold silhouettes and refined finishes without compromising on resilience or aesthetic.
Moissanite stands on its own, not because it imitates diamond, but because it performs at a level that meets contemporary expectations of luxury.
Moissanite at Iced London
At Iced London, moissanite plays a central role in defining the brand’s street luxury identity. The focus is on sharp craftsmanship, modern silhouettes, and jewellery that delivers immediate visual impact.
Moissanite features across core collections, including Moissanite Chains, Moissanite Pendants, Moissanite Rings, Moissanite Bracelets, and Moissanite Earrings. Each piece is designed to highlight clarity and light performance while maintaining a strong, contemporary finish.
Every stone is precision-cut and carefully set to ensure consistency, durability, and a refined appearance. The result is jewellery that reflects modern culture without compromising on craftsmanship.
Shop our range of chains, bracelets, rings, earrings, pendants, and wallet chains, designed to complement modern street and urban styling. Each collection reflects a focus on clean silhouettes, strong visual presence, and jewellery built for everyday wear.