Moissanite vs. Cubic Zirconia
Moissanite vs Cubic Zirconia: What’s the Difference?
When looking for an engagement ring or fine jewelry, many people come across two popular diamond alternatives: moissanite and cubic zirconia. At first glance they can appear similar, but they are actually very different gemstones in terms of durability, sparkle, and long-term quality.
Understanding these differences can help you decide which stone is better suited for jewelry that is meant to last.
What Is Moissanite?
Moissanite is a gemstone made from silicon carbide. It was originally discovered in a meteor crater in 1893 by scientist Henri Moissan, although natural moissanite is extremely rare.
Because of this rarity, the moissanite used in jewelry today is created in laboratories.
Moissanite is known for its exceptional brilliance and durability, which is why it has become a popular choice for engagement rings.
What Is Cubic Zirconia?
Cubic zirconia, often called CZ, is a synthetic gemstone made from zirconium dioxide.
It was developed in the 1970s as an inexpensive alternative to diamonds. Cubic zirconia can be produced very cheaply and is commonly used in fashion jewelry.
Although it can look similar to diamond when new, cubic zirconia has very different physical properties compared with moissanite and diamonds.
Durability and Hardness
One of the biggest differences between moissanite and cubic zirconia is durability.
On the Mohs hardness scale:
-
Moissanite: 9.25
-
Cubic zirconia: 8–8.5
Moissanite is significantly harder and more resistant to scratches. This makes it suitable for jewelry that is worn every day, such as engagement rings.
Cubic zirconia is softer and can develop scratches over time, especially with regular wear.
Sparkle and Brilliance
Both gemstones are known for their sparkle, but the type of brilliance they produce is different.
Moissanite has a very high refractive index, which creates strong brilliance and colorful flashes of light known as fire.
Cubic zirconia also sparkles, but its brilliance is generally less intense. Over time, CZ stones may also lose some of their clarity as small scratches develop on the surface.
Because of this, moissanite tends to maintain its sparkle for much longer.
Long-Term Appearance
Another important difference is how the stones look over time.
Moissanite maintains its clarity and brilliance for many years. It does not easily become cloudy or dull.
Cubic zirconia, on the other hand, can gradually become cloudy or scratched with everyday wear. This is one reason it is often used in temporary or fashion jewelry rather than fine jewelry.
For a ring that is worn daily, durability plays an important role in how the gemstone looks years later.
Price Differences
Cubic zirconia is extremely inexpensive and can cost just a few dollars per stone.
Moissanite is more expensive than cubic zirconia but still far less expensive than diamonds.
Many buyers choose moissanite because it offers high durability and brilliance while remaining much more affordable than traditional diamond engagement rings.
Which One Is Better for Engagement Rings?
Both gemstones have their place in jewelry, but they are typically used for different purposes.
Cubic zirconia is commonly used in fashion jewelry or temporary pieces because it is inexpensive and easy to produce.
Moissanite, however, is considered a fine jewelry gemstone because of its durability, brilliance, and long-lasting appearance.
For engagement rings that are worn every day, moissanite is usually the preferred choice.
Choosing the Right Stone
Moissanite and cubic zirconia may look somewhat similar at first, but their performance over time is very different.
Moissanite offers exceptional durability and brilliance, making it a popular choice for engagement rings and fine jewelry.
Cubic zirconia remains a budget-friendly option often used for fashion jewelry or short-term wear.
Understanding these differences can help you choose the gemstone that best fits your needs and expectations for long-term beauty and durability.