At Christopher’s Fine Jewelry, we often receive questions about the differences between lab grown diamonds and cubic zirconia. Both are popular choices for jewelry, but they are distinct in many ways. This blog will explore these differences and help you understand the unique qualities of each gemstone.
What Are Lab Grown Diamonds?
Lab grown diamonds, also known as synthetic or cultured diamonds, are created in a controlled laboratory environment. These diamonds have the same physical, chemical, and optical properties as natural diamonds. The primary difference is their origin.
How Are Lab Grown Diamonds Made?
Lab grown diamonds are produced using two main methods: High Pressure High Temperature (HPHT) and Chemical Vapor Deposition (CVD).
- HPHT: This method mimics the natural diamond formation process, where carbon is subjected to high pressure and high temperature, causing it to crystallize into diamond.
- CVD: In this process, a diamond seed is placed in a chamber filled with carbon-rich gas. The gas is ionized, and carbon atoms are deposited onto the seed, forming a diamond over time.
Both methods produce high-quality diamonds that are virtually indistinguishable from natural diamonds to the naked eye.
Appearance and Quality
Lab grown diamonds exhibit the same range of color and clarity as natural diamonds. They can be found in various shapes and sizes, and their brilliance and fire are identical to those of natural diamonds. Specialized equipment is required to distinguish lab grown diamonds from their natural counterparts, as their visual properties are remarkably similar.
What Is Cubic Zirconia?
Cubic zirconia (CZ) is a synthetic gemstone made from zirconium dioxide. It was developed in the 1970s as a cost-effective alternative to diamonds. While it can closely resemble a diamond, cubic zirconia has different physical and optical properties.
How Is Cubic Zirconia Made?
Cubic zirconia is created through a process that involves melting powdered zirconium dioxide with stabilizers and then allowing it to cool and crystallize. This process results in a gemstone that is visually similar to a diamond but much more affordable.
Appearance and Quality
Cubic zirconia is known for its high clarity and can be produced in a variety of colors, although it is most commonly seen in a colorless form. It has a high refractive index and dispersion, giving it a brilliant sparkle. However, it lacks the depth and complexity of light reflection found in diamonds.
Key Differences Between Lab Grown Diamonds and Cubic Zirconia
While lab grown diamonds and cubic zirconia may look similar at first glance, they have several key differences:
Composition
- Lab Grown Diamonds: Composed of pure carbon, identical to natural diamonds.
- Cubic Zirconia: Made of zirconium dioxide, a different chemical composition that contributes to its unique properties.
Brilliance and Fire
- Lab Grown Diamonds: Have a brilliance and fire similar to natural diamonds, characterized by white light reflections and subtle rainbow flashes.
- Cubic Zirconia: Exhibits high brilliance and dispersion, but the sparkle tends to be less nuanced and can appear more “glassy” compared to diamonds.
Durability
- Lab Grown Diamonds: Score a perfect 10 on the Mohs hardness scale, making them the hardest material known. This makes them exceptionally resistant to scratches and ideal for everyday wear.
- Cubic Zirconia: Scores around 8.5 on the Mohs scale, making it softer and more prone to scratches and wear over time.
Price
- Lab Grown Diamonds: Generally more expensive than cubic zirconia but less expensive than natural diamonds. The cost reflects the complex manufacturing process and the gemstone’s durability and brilliance.
- Cubic Zirconia: Significantly more affordable than both natural and lab grown diamonds, making it a popular choice for costume jewelry and budget-conscious buyers.
Uses of Lab Grown Diamonds and Cubic Zirconia in Jewelry
Both lab grown diamonds and cubic zirconia are versatile gemstones used in a wide range of jewelry pieces. Here’s how each gemstone is commonly used in jewelry:
Lab Grown Diamonds
Engagement Rings
Lab grown diamonds are a popular choice for engagement rings due to their timeless beauty and durability. They offer the same sparkle and elegance as natural diamonds, making them perfect for this significant piece of jewelry.
Wedding Bands
Lab grown diamonds are often used in wedding bands. Whether as accent stones or the main feature, these diamonds add a touch of brilliance to wedding bands, symbolizing enduring commitment.
Earrings
From classic diamond studs to intricate drop earrings, lab grown diamonds are a stunning choice. Their brilliance and fire make them an excellent option for earrings, providing a luxurious touch to any outfit.
Necklaces and Pendants
Lab grown diamonds are widely used in necklaces and pendants. Whether as a single solitaire diamond pendant or as part of an elaborate necklace design, lab grown diamonds add a sophisticated sparkle.
Bracelets
Diamond bracelets, including tennis bracelets and bangles, often feature lab grown diamonds. These bracelets offer a continuous line of brilliance, making them a favorite for both everyday wear and special occasions.
Fashion Rings
Lab grown diamonds are used in fashion rings for their versatility and beauty. These rings can feature intricate designs, multiple diamonds, or a combination of gemstones, offering endless possibilities for creativity and personal expression.
Cubic Zirconia
Costume Jewelry
Cubic zirconia is commonly used in costume jewelry due to its affordability and brilliant appearance. It allows for bold and glamorous designs without the high cost of diamonds.
Fashion Accessories
CZ is popular in fashion accessories, including hairpins, brooches, and even handbags. Its versatility and low cost make it a favorite for adding a touch of sparkle to various accessories.
Special Occasion Jewelry
Cubic zirconia is often used in jewelry designed for special occasions, such as proms, weddings, and parties. It provides the desired sparkle and elegance without the associated expense.
Daily Wear Pieces
CZ is also used in daily wear pieces, such as simple stud earrings and rings. Its affordability makes it easy to replace if damaged, making it a practical choice for everyday use.
Conclusion
Lab grown diamonds and cubic zirconia are both excellent choices for different types of jewelry, each with its own distinct advantages. Understanding the differences between these gemstones can help you make an informed decision that aligns with your personal style and budget.
For a Free Custom Jewelry Consultation, visit us at Christopher’s Fine Jewelry. We're located at 11412 Ocean Highway, Pawleys Island, SC 29585. You can also call us at (843) 237-3773. Our business hours are Monday to Friday from 10:00 am to 6:00 pm, and Saturday from 10:00 am to 5:00 pm. We are closed on Sundays.
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