Are Cubic Zirconias The Same As A CVD Diamond?
No, cubic zirconia is not the same thing as a CVD diamond. Lab created diamonds share the same chemical properties as natural diamonds, while cubic zirconia is a diamond simulant with a shorter lifespan due to damage from everyday wear and discoloration over time.
GIA comments on this stating, “some people might refer to lab grown diamonds as imitations or simulants, but this is incorrect. Actual imitations like cubic zirconia or moissanite, which only look like a diamond, have very different chemical and physical properties that allow trained gemologists to identify them easily. However, lab grown diamonds are more challenging to detect since they are in every way the same as natural diamonds.”
While cubic zirconia is a lower quality diamond simulant often used in costume jewelry, other diamond simulants are higher in quality and better stand the test of time. One of these simulants is moissanite, a stone composed of silicon carbide that was discovered in 1893. Moissanite gemstones are typically near colorless and are famous for their shimmering disco ball effect when exposed to light. These stones sell at a much more affordable price than mined diamonds and act as fabulous center stones—though easily told apart from diamonds because of their sparkle factor.
For a top tier diamond simulant option, engagement ring shoppers love the Nexus Diamond™ alternative. A patented diamond simulant, the Nexus Diamond™ alternative is the one simulant that most closely imitates the look, weight and wear of a diamond. This lab created stone is virtually indistinguishable from a diamond with the naked eye alone as it can cut glass, is completely colorless, rates internally flawless on the diamond clarity chart and is cut to maximize brilliance and fire. Unlike cubic zirconia, the Nexus Diamond™ alternative should not chip, crack or become discolored over time.