If you’ve ever shopped for sparkling jewelry online, you’ve likely seen both cubic zirconia (CZ) and diamonds listed. But what’s the real difference? And is CZ actually worth buying? Let’s break it down with helpful facts that clear up the confusion.
1. What Is Cubic Zirconia?
Cubic zirconia is a man-made stone that looks very similar to a diamond but is made from zirconium dioxide. It’s optically flawless, highly reflective, and far more affordable than diamonds.
2. Is CZ a Real Diamond?
No — CZ is not a diamond.
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Diamonds are natural stones formed deep in the earth under extreme pressure and heat.
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CZ is lab-created and much softer than a diamond on the Mohs scale (CZ is 8–8.5, diamonds are 10).
3. Can People Tell the Difference?
To the untrained eye, most people can’t tell a high-quality CZ apart from a diamond.
However:
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CZ tends to have more “rainbow sparkle” compared to a diamond’s white light refraction.
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It’s also heavier and can become cloudy over time if not cared for properly.
4. Why Choose Cubic Zirconia?
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Affordability: A diamond ring can cost thousands. A similar CZ ring? Under $100.
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Ethical & Sustainable: CZ is lab-grown, meaning no mining or questionable sourcing.
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Style Freedom: Try trendy designs without the guilt of overspending.
5. How to Make CZ Jewelry Last Longer
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Avoid harsh chemicals (like hairspray, perfumes, and cleaning products).
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Store in a dry, fabric-lined box.
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Wipe gently with a soft cloth after each wear.
Final Thoughts
Cubic zirconia isn’t a “fake diamond”—it’s a beautiful, affordable alternative that gives you that sparkle you love without the high price tag. Whether you're building your jewelry collection or shopping for a special gift, CZ is a smart, stylish option.
Need help picking the right piece?
Check out our most-loved cubic zirconia styles at BrightstoneJewelers.com — where sparkle meets sensibility.