Are Lab Grown Diamonds Cubic Zirconia?

Are Lab Grown Diamonds Cubic Zirconia?

Welcome to a sparkling discussion at Caleesi Designs, nestled in the heart of Austin's vibrant community. Today, we're unraveling a gem of a question: Are lab-grown diamonds and cubic zirconia the same? This inquiry isn't just about clarifying doubts; it's a journey into the fascinating world of gemstones, much like the artistic and musical voyage that led to the creation of our store.

Understanding Lab-Grown Diamonds

The Science Behind the Sparkle: Lab-grown diamonds are true diamonds, created in controlled environments using advanced technological processes like High Pressure High Temperature (HPHT) or Chemical Vapor Deposition (CVD). 

These methods mimic the natural conditions under which diamonds form over billions of years, resulting in gemstones with the same chemical composition, crystal structure, and physical properties as their natural counterparts.

Why Choose Lab-Grown: These diamonds offer a sustainable and ethically responsible choice. They reduce the environmental impact associated with traditional diamond mining and provide a conflict-free alternative, aligning with our ethos of harmonizing with nature.

Exploring Cubic Zirconia

  • A Different Composition: Cubic zirconia (CZ) is a synthesized material made of zirconium dioxide. It's completely different from diamonds in composition. While it can mimic the appearance of a diamond to the untrained eye, it lacks the same hardness, brilliance, and fire.
  • The CZ Appeal: Its affordability and versatility make CZ a popular choice for costume jewelry and for those seeking a diamond-like appearance without the associated cost.

Comparing Lab-Grown Diamonds and Cubic Zirconia

  • Composition and Hardness: Lab-grown diamonds are composed of carbon, just like natural diamonds, ranking 10 on the Mohs scale of hardness. CZ, on the other hand, is significantly softer, ranking around 8-8.5.
  • Optical Qualities: In terms of brilliance and fire (how a gemstone disperses light), lab-grown diamonds are identical to natural diamonds. CZ has less brilliance and more dispersion, leading to a more 'rainbow-like' effect, which can be distinguishable from the more subtle fire of a real diamond.
  • Cost and Sustainability: While lab-grown diamonds are more affordable than natural ones, they are more expensive than CZ. However, they offer a more sustainable and ethical choice compared to traditional mining.

Applications and Market Trends

In our journey at Caleesi Designs, we've seen an increasing interest in both lab-grown diamonds and cubic zirconia. Each appeals to different aspects of the budget, reflecting the diverse interests of our community—from jewelry enthusiasts.

How to Choose the Right Stone for You

When selecting between lab-grown diamonds and cubic zirconia, consider your lifestyle, budget, and values. Are you looking for a gemstone that will endure daily wear with lasting brilliance, or is a more affordable, aesthetic choice more aligned with your needs?


In conclusion, lab-grown diamonds and cubic zirconia are distinct in their composition, properties, and applications. At Caleesi Designs, we believe in educating our customers and helping them make informed choices that resonate with their personal stories and values. 

We invite you to visit us, where you can experience the unique Austin vibe, meet Chili, our friendly store dog, and explore our world of custom-designed jewelry. Whether you're looking for sustainability, affordability, or just a beautiful piece of jewelry, we're here to guide you on this glittering journey.

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