Moissanite vs Cubic Zirconia: Know the Real Difference

Shopping for a sparkling stone that fits your budget and values? You’ve likely come across both Moissanite and Cubic Zirconia (CZ). At first glance, they may look similar — but they’re worlds apart in quality, brilliance, and longevity. Here's how they truly compare. For more gemstone matchups, see our Moissanite vs Diamond Guide.

✨ Brilliance & Sparkle

Moissanite has a refractive index of 2.65–2.69, meaning it bends and reflects light more powerfully than almost any gemstone — even diamonds. It creates bold rainbow flashes that stand out in any lighting.

Cubic Zirconia has a lower refractive index (~2.15), and while it sparkles when new, it tends to dull and haze over time. Curious why Moissanite maintains its fire? Learn about Moissanite’s optical magic here.

🧪 Durability

Moissanite ranks 9.25 on the Mohs hardness scale, making it scratch-resistant and ideal for everyday wear. Read our care tips for long-lasting shine.

Cubic Zirconia ranks around 8–8.5 — much softer — and is more prone to scratching, chipping, and losing clarity with time.

💰 Price vs Value

CZ is cheaper upfront, often used in fashion jewelry and disposable accessories. But that low price comes at the cost of long-term durability and aesthetic. Moissanite is more of an investment — but one that holds its beauty and value for years to come. Here’s why it’s worth it.

🌱 Ethics & Sustainability

Both stones are lab created and conflict free. However, Moissanite is typically produced under more controlled conditions, with higher standards for quality and certification. Explore what makes a gem truly ethical.

💬 Final Verdict

If you want a budget friendly sparkle for casual temporary use, Cubic Zirconia is fine. But if you're shopping for an engagement ring or heirloom quality jewelry, Moissanite is in a completely different league.

Browse Moissanite Engagement Rings or start your custom design with Jewel Eternal today.