Is A Lab Created Diamond A Cubic Zirconia?

Lab-grown diamonds have gained unrivaled popularity in recent years. Depicting the same hardness, cut, clarity, and luster as that of diamonds, their presence in the jewelry market has created a highly debated impact, leaving jewelry collectors and enthusiasts perplexed. 

People often wonder about their relationship with naturally occurring diamonds and other man-made stones, such as cubic zirconia. Possessing a bedazzling sparkle, they are affordable alternatives to natural diamonds, possessing structural similarities yet some fundamental differences when compared to CZ. 

This comprehensive guide clarifies the key differences between lab-created diamonds and cubic zirconia, explaining how they are made and identifying the proven practical methods that help distinguish between each stone. 

Ultimately, you will have a clear understanding of why these two gemstones, both synthetic, exhibit significant differences in their composition and value, which make them truly unique in their applications. 

At LA Chic Jewelry, based in Los Angeles and backed by three generations of master craftsmanship, we specialize in high-quality AAA-certified cubic zirconia and custom jewelry. Whether you’re comparing lab-grown diamonds or looking for a budget-friendly yet luxurious option like CZ, we’re here to help guide your decision.

Comparing Lab-Created Diamond to a Cubic Zirconia

Lab-created diamonds and cubic zirconia are not similar, despite having the same appearance and originating from the same synthetic sources. Their fundamental differences lie in their composition and properties. Sharing identical physical and chemical properties as those of mined diamonds, lab-grown diamonds are considered real diamonds. Both comprise the purest form of carbon atoms combined in a crystal lattice structure. 

CZ, on the contrary, is a diamond simulant made from zirconium dioxide (ZrO₂). Mimicking the physical appearance of a diamond, cubic zirconia has a completely altered mineral structure. The distinction between the two is significant, as it can affect everything from durability to value. 

With both stones being man-made and looking strikingly similar to the untrained eye, gemologists and jewelry professionals easily distinguish between them using various testing methods. 

When you shop with LA Chic Jewelry, you’ll receive expert guidance in choosing between lab-grown diamonds and AAA CZ. We offer both, crafted with precision and attention to detail, so you can make a choice that suits your taste and budget.

Key Differences: Lab-Created Diamond vs Cubic Zirconia

Method of Preparation

Lab-grown diamonds begin with a tiny piece of mined diamond, called a diamond seed. The seed is placed in a carbon-rich environment where it is artificially grown under controlled conditions using either High Pressure High Temperature (HPHT) or Chemical Vapor Deposition (CVD) methods. Here, the result is a stone whose practicality resembles that of a mined diamond. 

The process of formation is so intricate that even professional gemologists and veteran jewelry experts cannot mark any clear difference between lab-grown and mined diamonds without the use of specialised equipment. Diamond testers would recognize lab-grown diamonds as authentic diamonds, with no clear demarcation resulting from the same thermal and electrical conductivity properties. 

Cubic zirconia production involves heating zirconium dioxide to extremely high temperatures. Zirconium dioxide melts, which is further allowed to cool and crystallize. With some cubic zirconia occurring naturally, the gemstones used for commercial purposes are entirely synthetic. Their manufacturing process is significantly less expensive and simpler than that of natural diamonds, making them more affordable. 

Looking for masterfully crafted CZ rings or diamond-alternative earrings? Explore the collection at LA Chic Jewelry—our artisans have perfected the technique over decades to bring you pieces that dazzle.

Virtually Indestructible

Possessing unbeatable hardness and durability, diamonds earn their reputation as the hardest and virtually indestructible materials known on Earth. Both mined and lab-grown diamonds rank 10 on the Mohs Scale of Hardness, making them nearly unbreakable when kept exposed to normal wear conditions. Their extreme hardness allows diamonds to cut through other materials, including glass and concrete, easily. 

Cubic zirconia ranks eighth on the Mohs Scale, making it relatively hard but not indestructible. While suitable for jewelry, cubic zirconia can scratch, chip, or become cloudy over time, especially with regular wear. This difference in durability has a significant impact on the longevity of jewelry pieces. 

That’s why our team at LA Chic Jewelry uses only the highest-grade cubic zirconia in settings designed for longevity and brilliance, ensuring maximum durability and sparkle.

Physical Appearance and Optical Properties 

The way stones react with and respond to light reveals a great deal about their physical appearance. Diamonds reflect light in a specific pattern, creating a phenomenon known as brilliance. This brilliance appears as white light, featuring exceptional sparkle and fire. 

Cubic zirconia exhibits more vibrant flashes, often displaying a rainbow-like brilliance that can appear more intense than that of diamonds. While beautiful, this rainbow effect is a key identifier that distinguishes cubic zirconia from diamonds.

Weight and Density

Cubic Zirconia is about 75% heavier than diamonds of the same size. The significant difference in their weights is noticeable, especially when dealing with loose stones, making it a quick identification method for professional gemologists and jewelry experts. 

How To Tell a Lab-Created Diamond From a Cubic Zirconia

1. The Fog Test

While conducting this simple test, the thermal properties of diamonds are used. Breathe warm air onto the stone and observe how quickly the fog dissipates. Due to the excellent heat conductivity, diamonds clear the fog test almost instantly. Cubic Zirconia retains longer, keeping the fog visible for several seconds. 

For mounted jewelry, such as rings or earrings, this test works exceptionally well. Hold the piece close to your mouth and breathe directly onto the stone; a fog-like effect will occur, similar to fogging up a mirror. Genuine stones typically clear almost instantly, while imitations may take a few seconds longer to return to their original state.

2. The Light Test 

Lighting, whether natural or artificial, can make a significant difference in certain vital aspects between these stones. Based on the principles of the light test, diamonds produce white or gray light reflections under controlled conditions, resulting in a sparkle effect. CZ creates a more colorful impact, delivering more rainbow-like reflections that can make it appear too brilliant. 

The very prominent UV light testing provides a clear demarcation of fluorescence under UV light, often appearing blue. Cubic zirconia typically glows bright yellow under ultraviolet lighting, creating a distinct visual difference. 

3. Examine Its Flaws

Imperfections have ironically indicated authenticity. Most diamonds, including the lab-grown varieties, contain inclusions or tiny imperfections that are formed during the creation process. These inclusions stay completely visible under magnification, serving as proof of authenticity. 

Cubic zirconia stones are virtually flawless, especially when viewed under magnification. With this seemingly being a positive attribute, the stone being completely free from inclusions indicates that you are looking at a stimulant rather than a genuine diamond. 

4. The Water Test

The method would work best with loose stones. Fill the glass with water and drop the stone in. Diamonds have high density and will thus sink quickly to the bottom. CZ sinks, but it will do so more slowly because it is less dense. 

The water test, however, is not foolproof and would not always guarantee definitive results. The test, however, would prove a useful tool when combined with the other testing methods. 

Observing how the material reacts in the presence of water helps you gather additional clues and findings that support more reliable, scientific approaches. 

Need help making a confident choice? LA Chic Jewelry offers personalized consultations and expert craftsmanship, helping you select the perfect stone for your lifestyle.

Diamond Simulants Vs Synthetic Diamonds 

The jewelry industry distinguishes between diamond simulants and synthetic diamonds in a comprehensive manner. Lab-grown diamonds are synthetic diamonds that resemble natural diamonds created in laboratories. Diamond simulants, including cubic zirconia, Moissanite, and glass, are materials that resemble diamonds but have distinct compositions. 

This marks a clear distinction when considering how it could impact the value, durability, aesthetics, and certification. Lab-grown diamonds receive the same grading and certification as mined diamonds, while simulants are evaluated using different standards.

Considering the Cost

There could be a significant price difference between lab-grown diamonds and cubic zirconia. Lab-grown diamonds can typically cost 20-40% less than comparable mined diamonds, still representing a considerable investment. CZ costs close to a fraction of the price of a diamond, thus making it accessible in fashion jewelry and temporary pieces.

Cost can directly relate to longevity and overall value. Cubic zirconia is a truly affordable option upfront, making it not only an elite but also a highly preferred choice for those on a tight budget. However, it lacks the durability of other materials, becoming scratched or losing its luster over time. 

On the other hand, lab-grown diamonds, although initially more expensive, offer long-term value. They are incredibly durable, resistant to wear and tear, and maintain their brilliance and appearance for years to come, making them a worthwhile investment for those seeking lasting quality..

The Right Option for Your Needs

The choice between lab-created diamonds and cubic zirconia depends entirely on your priorities, including the budget and the intended use. From heirloom pieces to engagement rings, lab-grown diamonds are a preferred choice, offering the prestige, legacy, and durability of natural diamonds, all at a lower cost. 

Whether it's fashion jewelry or temporary pieces, CZ comes with the ideal sparkle, requiring minimal investment. Consider factors like daily wear, emotional significance, and long-term value when making your decision. Both options have their place in modern jewelry collections.

Frequently Asked Questions

1. Are lab-created diamonds real diamonds?

Yes, lab-created diamonds undoubtedly are real diamonds. Comprising the same chemical composition, crystal structure, and physical properties as the mined diamonds, the only difference you would find is their places of origin. 

Lab-created diamonds are formed artificially under controlled conditions in a laboratory, whereas naturally mined diamonds are extracted from the Earth's core. 

2. Will cubic zirconia last as long as diamonds?

No, cubic zirconia is softer than diamonds. Becoming more prone to scratching, chipping, or cloudiness over time. While continuing to maintain its shine, compactness, sturdy, robust presence when worn occasionally, CZ would not keep up with its lustrous, textured appearance, being vulnerable to the daily wear and tear. 

3. Can jewelers tell the difference between lab diamonds and cubic zirconia?

Yes, professional jewelry veterans could easily distinguish between lab-created diamonds and cubic zirconia, considering visual inspection, basic tools, and testing equipment. From the differences in hardness to thermal conductivity, as well as varied optical properties, identification can be made straightforward.

4. Do lab-created Diamonds Test as Real Diamonds?

Yes, Lab-Created diamonds do test positive and are worth buying for specific reasons, such as fashion jewelry pieces, travel pieces, or if you want to closely imitate the look of diamonds without bearing the hefty price tags. These have the same thermal and electrical conductivity as mined diamonds. Standard diamond testing equipment can never distinguish between lab-grown and mined diamonds. 

5. Is it worth buying cubic zirconia?

Yes, it is worth buying CZ. A diamond simulant, cubic zirconia is a perfect choice for jewelry aficionados, collectors, and enthusiasts, crafted to meet specific needs. From fashion jewelry to travel pieces, CZ gives you the ideally matched diamond-like look without hefty investments. It, however, is not intended to last long or provide the intended value for a lifetime. 

Helping You Make An Informed Decision

Understanding the differences between lab-created diamonds and cubic zirconia, you are now empowered to make informed purchase decisions. Unearthing every spec of information covering the two materials, we very well know how both serve different purposes and neither stands inherently superior. They are there to meet various needs under select budget ranges. 

Whether it's the choice of lasting beauty or the enduring appeal and authenticity of lab-grown diamonds, or the cut, clarity, and affordable sparkle of cubic zirconia, it is quality craftsmanship that matters. At LA Chic Jewelry, our skilled masters bring three generations of expertise to creating exceptional pieces. 

Throughout our 35-year history in Los Angeles, we've specialized in high-quality, AAA-certified cubic zirconia products, with a particular expertise in engagement rings and custom designs. Our commitment to excellence ensures that whether you choose diamonds or cubic zirconia, you'll receive a beautifully crafted piece that meets your exact specifications.