The choice between cubic zirconia, moissanite, and diamond depends on budget, durability needs, and desired brilliance. Cubic zirconia (Mohs 8-8.5 hardness, refractive index 2.15-2.18) offers affordability ($20-$50/carat) but lacks long-term durability. Moissanite (Mohs 9.25 hardness, refractive index 2.65-2.69) provides superior thermal conductivity (490 W/m·K) and fiery brilliance at mid-range pricing ($300-$1,000/carat). Diamonds (Mohs 10 hardness, refractive index 2.42) remain unmatched in scratch resistance and cultural value, though costly ($2,000-$25,000/carat). For daily wear, moissanite balances durability and sparkle; cubic zirconia suits temporary/occasional use, while diamonds offer heirloom status
What Is Cubic Zirconia? (CZ)
One common diamond alternative is cubic zirconia, a synthetic gemstone. Its various hues and low price tag come from its creation in a controlled laboratory environment. Costume jewellery makers and those on a budget often use cubic zirconia (CZ) for its dazzling appearance and affordable price. The radiance of cubic zirconia is an important quality.
Understanding the Base Material: Zirconium Dioxide
Zirconium dioxide, a white crystalline oxide of zirconium, is the main component of cubic zirconia. The inherent monoclinic crystal structure of zirconium dioxide makes it unsuitable for usage as a gemstone due to its inability to replicate diamonds' fire and brightness. There are requirements that must be satisfied to convert it into the cubic crystal form that gemstones need. Cubic zirconia exhibits a compressive strength of 2000 MPa and fracture toughness of 2.4 MPa·m¹/², with a refractive index of 2.15–2.18, distinguishing its optical performance.
It may seem even more brilliant under certain lighting situations because of its greater refractive index compared to diamond. Contrarily, cubic zirconia ranks between 8 and 8.5 on the Mohs hardness scale, making it softer than moissanite and diamonds. Although it does a good job of simulating diamonds in appearance, it will wear out and scratch more quickly.
Compared to moissanite and diamonds, cubic zirconia is much more affordable. So, if you want a beautiful piece of jewellery but are on a tighter budget, this material is a great pick.
What Is Moissanite ?
Another well-liked substitute for diamonds, moissanite is different from cubic zirconia in that it is a genuine gemstone, although an incredibly uncommon one. To fulfil demand and guarantee ethical sourcing, lab-created moissanite is the majority of what you can find on the market today. Moissanite is more dazzling and fiery than diamonds, in fact.
Its dazzling sheen is due to its refractive index, which ranges from 2.65 to 2.69. Plus, with a Mohs hardness of 9.25, moissanite is highly long-lasting and perfect for daily use. In terms of pricing, moissanite is somewhere in the middle between diamonds and cubic zirconia.
It may cost more than CZ, but it's still less than diamonds mined from the ground up. Consequently, moissanite has gained popularity as a cost-effective substitute for diamonds in engagement rings and other high-end jewellery due to its glamorous appearance.
What Are Diamonds ?
Diamonds have long been the standard for engagement rings and other forms of exquisite jewellery. Their distinctive characteristics are a result of the enormous pressures and millions of years of natural formation that went into making these jewels. Diamonds are the hardest gemstones because of their extraordinary hardness; they score a perfect 10 on the Mohs scale.
The "four Cs"—carat weight, colour, clarity, and cut—are crucial factors to keep in mind while shopping for diamonds. In determining the value and quality of a diamond, several variables are crucial. Diamonds, especially high-quality stones, might be pricey, but they are also enduringly beautiful, and, more often than not, their value increases with time.
Comparing the durability
If you're looking for a gemstone to wear every day, such as in an engagement ring, durability is key.
The Mohs Scale of Hardness rates diamonds as the hardest naturally occurring material on Earth, with a grade of 10 out of 10. This quality makes them very scratch-resistant, making them perfect for everyday use for many years to come.
With a hardness level of 9.25 on the Mohs Scale, Moissanite is very long-lasting. It may not be as resilient as diamonds, but it can still endure regular use without showing signs of wear and tear.
According to the Mohs Scale of Hardness, cubic zirconia has a lower durability grade than other gemstones. It will deteriorate and scratch more readily than diamonds and moissanite.
Which is better: Moissanite or Cubic Zirconia?
Consider the following criteria while making your decision: price, colour, durability, brightness, and overall beauty. When comparing moissanite vs. cubic zirconia (CZ), Despite their similarities, the two diamond alternatives are quite different in appearance and quality.
The hardness and scratch resistance of moissanite allow it to keep its lustre and purity for a long time with little care. Scratches and the gradual buildup of surface oils and debris may cause CZ to lose some of its shine over time. If not cleaned often, it could potentially get foggy-looking.
While moissanites do cost more than cubic zirconia, they are still much less than diamonds that are either naturally occurring or created in a lab. Costs may vary from $300 to $1,000 per carat, with size and quality being the main factors to consider. CZs typically cost between $20 and $50 per carat, making them one of the most budget-friendly diamond substitutes.
Which Is Better: Moissanite or Diamond?
Your budget, ethical concerns, desired look, and personal preferences are some of the variables to consider while deciding between moissanite and diamond. To help you choose the perfect gemstone, we've outlined all the important factors below:
Budget
The price of moissanite is lower compared to diamonds. Size and colour grade determine moissanite pricing the most; however, even the most exquisite moissanites are inexpensive compared to diamonds. A one-carat diamond, for example, may cost several thousand dollars, yet an identical moissanite might cost as little as a few hundred.
The cultural importance and extreme rarity of natural diamonds drive up their price significantly. The "Four C's"—carat weight, cut, clarity, and color—determine a diamond's price. In comparison to moissanites, even lab-grown diamonds are more costly.
First impression
With a refractive index of 2.65 compared to 2.42 for diamonds, moissanites are more dazzling than diamonds. They seem very sparkly because they reflect a lot of white light (brilliance) and a rainbow of colours (fire).
For many, the timeless radiance of diamonds is a symbol of refinement and heritage. Their radiance isn't quite as bright as moissanites', but it still has an enduring allure.
Mohs hardness grade 9.25–9.5 means that moissanite is quite robust and won't crack or scratch easily, making it perfect for everyday use. According to the Mohs scale, which ranks hardness from 1 to 10, diamonds are the hardest naturally occurring material on the planet. Under typical circumstances, they are almost unbreakable.
What Are the Cost Differences and Value Retention?
Price per Carat Analysis
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Lab-grown diamonds cost 30-40% less than natural counterparts but depreciate faster (50-60% resale loss). Moissanite’s specific gravity differs markedly from diamond, aiding identification
How to Spot High-Quality Moissanite and Cubic Zirconia?
Considerations, including colour, cut, clarity, durability, and overall workmanship, are essential when assessing high-quality moissanite and cubic zirconia (CZ). The following is an in-depth tutorial on how to identify genuine diamond substitutes.
The high refractive index (2.65-2.69) of high-quality moissanite gives it a very brilliant appearance. This gives it a bright, rainbow-like sheen and makes it a better light bender than diamonds. Find moissanite that sparkles the same on every aspect if you want to get a high-quality stone.
In well-lit environments, look for the "disco ball effect"; although the dazzling rainbow of colours may be enticing to the naked eye, it's a red flag for poor quality in stones of greater carat weight.
Compared to moissanite and diamonds, CZ's brilliance is less intense because of its lower refractive index (2.15-2.18). Despite the passage of time, high-quality CZs should maintain their lustre and brilliance.
Clarity
Produced in a controlled environment, the majority of lab-grown moissanites are almost perfect. Under a microscope, a high-quality moissanite will not show any imperfections or impurities.
The look of CZ is likewise meticulously designed to be faultless. Careful inspection will reveal no inclusions or flaws in a high-quality CZ stone.
Wrapping up
In the end, it's up to you to consider your budget, personal style, and intended jewellery use when selecting a gemstone. Cubic zirconia could be a great option if you want a piece that stands out but doesn't break the bank. Think about moissanite if you want something a little fancier but yet within your price range.
Nonetheless, a diamond can be the ideal option if you're looking for the classic representation of everlasting love. There is a wide range of preferences and requirements, and every gemstone provides something special. For those who appreciate timeless elegance and eternal brilliance, explore our exclusive diamond collection at Cove Jewellery to find the perfect symbol of your unique love story