Lab-Grown Diamonds and “Cubic Zirconia”

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By RichardLederman

You love the sparkle and luster of diamond jewelry but don’t have the money to spend on it. Enter: cubic zirconia.

This stone is affordable and was a popular choice for Millennials (remember the Claire’s earring carousels? Its production has improved and beautiful pieces continue to be made. They are often difficult to distinguish from real diamonds. Idunnu Tomori, a jewelry designer, says that it is great to see people feel happy regardless of their spending.

As diamond creation continues to evolve, there is sometimes confusion about what constitutes a synthetic or simulated moissanite vs diamond and what is considered a true, real diamond. You’ve reached the right place if you want to know the differences between lab-grown and cubic zirconia. Continue reading to learn how they differ in the most crucial ways: cost, durability, sparkle, and more.

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What is a Lab-Grown diamond And Cubic Zirconia?

A lab-grown diamond can only be described as a laboratory-grown diamond. The chemical makeup of a lab-grown diamond is identical to a natural one, as they both contain pure carbon. Chemical vapor deposition is the most popular method for creating lab-grown diamonds. This involves placing a small, Tennis Bracelets thin slice of an existing diamond (which can be either natural or lab-grown), in a vacuum. The vacuum simulates the heat and intense pressure required to make a natural-occurring diamond. Carbon molecules are then assimilated to the “seed” diamond run club. It takes between a few weeks to get a lab-grown diamond to reach its desired size.

What is Cubic Zirconia?

Cubic zirconia, also known as zirconium dioxide (CZ), is a crystalline form. Although a form of CZ may exist in nature in other stones, it is very rare. All CZ currently on the market is manufactured. CZs can be colorless and appear similar to diamonds, but they have a different chemical makeup. (Diamonds are carbon and CZs zirconium dioxide, as mentioned earlier. They are often called “simulated” or “synthetic diamond engagement rings when they are referenced in overlapping globes.

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Lab-grown diamonds are often cheaper than natural diamonds.

Cubic zirconia stone production is much less expensive than traditional diamonds. This is because they don’t need to recreate pre-volcanic conditions, which are only found below the Earth’s crust. They are often only a fraction of the price of diamonds with similar cut and size. The price gap only grows as the stones get larger. Tomori estimates that a ring made of CZ will cost you less than $100.


Lab-grown diamonds contain pure carbon, just like natural diamonds. They are extremely durable and the hardest material on earth, a Mohs hardness of 10. One can carry one, knock it around, or wear it through physical demanding activities. There is very little chance that the stone will crack unless there is a preexisting injury. It’s a different story to knock the diamond out of its place.

CZs can still be hard, ranging from an 8 to 8.5 Mohs scale. Although they can withstand everyday wear and tear, Tomori says that you might get some scratches from moving your hands around.

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