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Moissanite vs Diamond Nexus: A Clear Comparison for Informed Buyers

Moissanite vs Diamond Nexus
Delve into a comprehensive comparison of Moissanite and Diamond Nexus, offering clarity for buyers seeking alternatives to traditional diamonds. Gain valuable insights to make informed and confident choices in the world of gemstone purchases.

When exploring the world of gemstones, you've likely come across the debate between moissanite and Diamond Nexus stones. Understanding the differences between these two diamond alternatives is essential when you're making a decision for jewelry that not only aligns with your personal values but also fits within your budget. Moissanite, a naturally occurring silicon carbide, is now primarily laboratory-grown and is celebrated for its durability and brilliance, often being compared to diamonds because of its striking resemblance and affordability.

Diamond Nexus, on the other hand, focuses on creating lab-created diamonds that claim to provide the same beauty as natural diamonds at a fraction of the cost. Like moissanite, these stones offer a more cost-effective solution without compromising on the appearance of the jewelry piece. Whether you're considering an engagement ring, a pair of earrings, or another piece of jewelry, the choice between moissanite and Diamond Nexus may hinge on factors such as price, ethical sourcing, and how much value you place on having a stone with properties closest to that of a natural diamond.

As you delve deeper into the characteristics of moissanite and Diamond Nexus stones, remember to consider your priorities, whether they are sparkle, hardness, or pricing. Moissanite boasts a refractive index that is higher than that of a natural diamond, which gives it more fire and brilliance, while a Diamond Nexus stone is designed to replicate the look and feel of a diamond as closely as possible. Ultimately, your choice should reflect what matters most to you in terms of aesthetic, cost and ethical considerations.

Understanding Moissanite and Diamond Nexus


When you're exploring the world of gemstones, you may encounter two popular diamond alternatives, moissanite and Diamond Nexus. Moissanite, a stone composed of silicon carbide, was first discovered by the French scientist Henri Moissan in 1893. Initially found in meteor craters, natural moissanite is incredibly rare, leading to the creation of synthetic moissanite for jewelry.

Moissanite attributes:

  • Brilliance: Very high refractive index
  • Hardness: 9.25-9.5 on the Mohs scale
  • Composition: Silicon carbide
Characteristic Moissanite Diamond Nexus
Composition Silicon carbide (SiC) Patented coating over a core crystal
Hardness (Mohs Scale) 9.25 Varies (typically 8 - 9)
Brilliance High High
Fire (Dispersion) High High
Color Colorless to near-colorless Varies (colorless to various colors)
Cost Varies (usually more affordable than diamonds) Varies (typically more affordable than diamonds)
Durability Very durable for daily wear Durable for daily wear
Origin Laboratory-created Laboratory-created
Popularity Popular as a diamond alternative Popular for affordable diamond-like options

On the other hand, Diamond Nexus simulants are lab-created to mimic the appearance of a natural diamond. Though the exact composition is proprietary, they are not made of carbon crystals like natural diamonds but are designed to look and behave very similarly.

Diamond Nexus attributes:

  • Brilliance: High luster and light performance
  • Hardness: Varies, but generally less than natural diamonds
  • Composition: Patented formula simulant

Both options are considered ethical and budget-friendly alternatives to natural diamonds. While moissanite is appreciated for its durability and brilliance, making it an excellent choice for those who want a stone that is close in hardness to a diamond, Diamond Nexus simulants are admired for their diamond-like appearance and affordability. It's important to understand these differences to make an informed decision based on your preference and values.

Physical and Optical Properties

Moissanite on left and Diamond Nexus stone on right side

When choosing between moissanite and Diamond Nexus stones for your jewelry, it's important to understand how they compare in terms of hardness, color, and their ability to reflect light. Each has unique characteristics that may influence your preference.

Hardness and Durability

Moissanite is second only to diamonds when it comes to hardness, boasting a 9.25 on the Mohs scale of hardness. This makes it highly durable and resistant to scratches and abrasions. On the other hand, Diamond Nexus stones are also durable but do not match the hardness of moissanite or natural diamonds.

Color and Clarity

Moissanite can range in color from colorless to slight hues, which are often undetectable to the naked eye. In comparison, Diamond Nexus stones aim to mimic the color and clarity of high-grade diamonds, generally appearing clear with minimal inclusions or cloudiness.

Cut and Shape

The cut of a stone drastically affects its brilliance and sparkle. Moissanite is available in various stone cuts, such as round cut, princess cut, and pear cut. Diamond Nexus stones are also crafted into all the traditional cuts, ensuring that you can find the shape that best suits your design preferences.

Brilliance and Fire

Moissanite has a refractive index ranging from 2.65 to 2.69, giving it a brilliant sparkle that’s even more pronounced than that of a diamond. It also exhibits high dispersion, resulting in noticeable fire — the play of colors seen when light is dispersed. Diamond Nexus stones are designed to emulate the brilliant scintillation of diamonds, though they may not achieve the same level of optical properties as moissanite.

Comparing Cost and Value

Collection of diamond nexus and moissanite ring under different price tags

When you're in the market for an engagement ring or fine jewelry, understanding the distinction between the cost of moissanite and diamond nexus is crucial for making an informed decision. Let's explore the specifics in terms of price and affordability as well as resale value and guarantees.

Price and Affordability

Moissanite, a popular diamond alternative, is renowned for its affordability. Typically, you can expect to pay only a fraction of the price of a diamond nexus with moissanite, often saving as much as 90% for a gemstone that looks remarkably similar to a traditional diamond. This makes moissanite an excellent choice if you desire the look of a diamond without the hefty price tag.

  • Diamond Nexus: $5,000 - $10,000 for 1-carat ring
  • Moissanite: $500 - $1,000 for 1-carat ring

Moreover, moissanite ranks high on the Mohs scale of hardness, which means it's a durable gemstone suitable for everyday wear. This quality, combined with its low cost, makes it a compelling choice for those looking for both beauty and longevity in their jewelry without straining their budget.

Resale Value and Guarantees

While moissanite offers significant initial savings, diamonds traditionally hold better resale value over time. If considering future value, keep in mind that a diamond may be more amenable to resale, potentially fetching a higher price than a moissanite piece.

  • Diamond Nexus Resale Value: Retains 50-70% of original value
  • Moissanite Resale Value: Retains 10-30% of original value

Concerning guarantees, many moissanite retailers provide a lifetime stone guarantee, assuring you against potential damage or defects. Diamond nexus options often come with similar guarantees in addition to certified appraisals which may aid in resale value assurance. It's important to verify the specifics of these guarantees to understand the long-term value of your investment.

Impact on Environment and Society

Diamond mine

When you choose a stone for your jewelry, it's important to consider not just beauty and cost, but also the environmental and societal implications. Here, we'll explore how mined and lab-grown stones, such as moissanite and diamonds, affect the planet and its inhabitants.

Eco-Friendly and Ethical Concerns

Mined Diamonds:

  • Environmental Footprint: Traditional mining for natural diamonds is labor-intensive and has a significant ecological footprint. This process often involves the removal of vast amounts of soil and rock which can result in habitat destruction, soil erosion, and pollution.

Lab-Grown Diamonds:

  • Reduced Soil Impact: Diamonds grown in a lab setting have a smaller direct impact on the Earth's soil as they require no excavating, thus preserving local ecosystems.
  • Energy Use: Producing lab-grown diamonds, however, still demands considerable energy. Companies producing these diamonds often promote their use of renewable energy to mitigate environmental impact.


  • Carbon Footprint: As a lab-created gemstone, moissanite has a significantly lower carbon footprint compared to natural diamonds. The creation process does not disrupt ecosystems or contribute to the large-scale earth moving required in diamond mining.
  • Ethical Advantage: With no mining required, moissanite is often considered a more ethical choice as it avoids the humanitarian issues linked to diamond mining in conflict zones.

Cubic Zirconia:

  • Affordability and Sustainability: This synthesized material offers an affordable alternative to natural diamonds, along with a lesser environmental burden due to its lower energy manufacturing process.

When considering a purchase from forever companies, you have options that are both eco-friendly and ethical. Always look for claims like conflict-free to ensure your purchase aligns with ethical and environmental concerns.

Gemological Ratings and Certifications

Certification of diamonds

When considering the purchase of gemstones or diamond simulants such as moissanite or diamond nexus, understanding gemological ratings and certifications is crucial. These assess the quality and verify the authenticity of your potential investment.

Understanding the 4Cs

The 4Cs of diamonds—cut, color, clarity, and carat weight—are the globally accepted standard for evaluating the quality of natural diamonds. These criteria are equally important for assessing synthetic diamonds and diamond simulants:

  • Cut: This refers not only to the shape of the diamond but also to how well the cutting has been executed, influencing the stone's brilliance.

  • Color: Diamonds are graded on a scale from D (colorless) to Z (light yellow or brown), whereas simulants may exhibit different color grades.

  • Clarity: This indicates the presence or absence of inclusions or blemishes in a stone, with grades ranging from Flawless (FL) to Included (I3).

  • Carat Weight: The weight of a diamond or simulant affects its value, with one carat being equivalent to 200 milligrams.

For lab-created diamond simulants, these factors are also applied to ensure a fair comparison to natural diamonds.

Certifications and Standards

Receiving a certification from a reputable body, like the Gemological Institute of America, confirms the gemstone's grading based on the 4Cs. This certification acts as a fingerprint for the stone, detailing its unique characteristics and ensuring its value and authenticity.

Lab-created diamond simulants and synthetic diamonds are also graded, but it's important to discern between these and natural diamonds. While they may appear similar with the naked eye, certified gemological tests reveal differences in structure and composition.

Remember, always ensure your gems or simulants come with a certification from a recognized authority, as this serves as your assurance of the stone's assessed value and quality.

Jewelry and Design Options

Engagement rings for sale

When exploring jewelry, especially items like engagement and wedding rings, your choice between moissanite and Diamond Nexus can have a significant impact on both design and cost. Both provide distinct advantages in terms of style and value for fine jewelry.

Engagement Ring and Wedding Band Choices

With moissanite engagement rings, you have the benefit of purchasing a stone that is nearly identical to diamond in appearance, but at a fraction of the cost. Moissanite typically scores 9.25 on the Mohs hardness scale, making it suitable for daily wear. Moissanite stones can range in carat weight, allowing you to select a size that fits both your design aspirations and budget.

Sale on Wedding Bands

In contrast, Diamond Nexus is known for its lab-created gemstones designed to mimic diamonds at an even lower price point. While not as hard as moissanite or diamonds, they still offer durability for everyday wear. Diamond Nexus engagement rings can be crafted into various styles, from a classic solitaire to more elaborate designs with accent stones.

Varied Gemstone Applications

Beyond engagement and wedding bands, moissanite and Diamond Nexus can be incorporated into a range of fine jewelry pieces. From earrings to pendants, the versatility in styles and settings allows you to personalize your jewelry collection. As accent stones, both moissanite and Diamond Nexus can complement other gemstones, bringing additional sparkle and flair to your jewelry.

Whether choosing engagement rings or wedding bands, it is beneficial to consider the longevity and appearance of the stones. Lab diamond engagement rings provide an alternative with properties closest to natural diamonds, ideal for those who value traditional styles with the ethical and economic benefits of lab creation. Choosing the right carat weight and style—be it a bold statement or a subtle embellishment—can elevate your jewelry piece from ordinary to extraordinary.

Care and Maintenance

A lady cleaning diamond rings at home

Proper care and maintenance are crucial in preserving the lustre and longevity of both moissanite and diamond nexus stones. Specific measures are tailored to maintain their unique properties, such as moissanite's double-refractive nature and the coating often applied to enhance a diamond nexus's appearance.

Cleaning Techniques


  • Routine Cleaning: Maintain the sparkle of your moissanite stone by using a simple solution of mild dish soap and warm water. Gently scrub with a soft toothbrush and rinse thoroughly to remove any residue.
  • Professional Cleaning: For a deeper clean, consider professional ultrasonic cleaners, which can remove accumulated dirt without damaging the stone.

Diamond Nexus:

  • Surface Care: Wipe your diamond nexus with a lint-free cloth to keep its shining surface free from fingerprints and daily grime.
  • Avoid Harsh Chemicals: Strong cleaning agents can strip the coating that gives the diamond nexus its brilliance, so stick to gentle soaps for cleaning.

Long-Term Preservation


  • Durability: Reassuringly, moissanite scores high on the Mohs scale of hardness, so you don't have to worry about everyday wear. However, avoid direct impacts that may cause chipping.
  • Storage: When not in use, store your moissanite in a separate pouch or compartment to prevent scratches.

Diamond Nexus:

  • Coating Care: Preserve the long life of your coating by removing your diamond nexus jewelry before activities that can cause abrasion.
  • Lifetime Stone Guarantee: Take advantage of the lifetime stone guarantee offered by many vendors, ensuring peace of mind for your diamond nexus investment.

By following these specific care techniques, you can ensure that both moissanite and diamond nexus stones remain a radiant part of your jewelry collection for years to come.

Frequently Asked Questions

When exploring the differences between moissanite and Diamond Nexus stones, you may have several questions regarding durability, cost, suitability for engagement rings, warranties, care instructions, and potential drawbacks. The following information addresses common inquiries to help you make an informed choice.

How does the durability of moissanite compare to that of Diamond Nexus stones?

Moissanite ranks at 9.25 on the Mohs scale of hardness, making it highly scratch-resistant and suitable for daily wear. Diamond Nexus stones, being a form of lab-created diamond simulants, are also designed to be durable, but moissanite typically surpasses them in terms of scratch resistance.

What are the cost differences between moissanite and Diamond Nexus jewelry?

Moissanite is often more cost-effective compared to natural diamonds and can also be less expensive than Diamond Nexus stones depending on the size and quality of the stone. However, both options present a more affordable choice compared to traditional diamonds.

Can moissanite rings be a suitable alternative for engagement rings compared to traditional diamonds?

Absolutely, moissanite can be an excellent alternative for engagement rings. It boasts remarkable brilliance and clarity, which often allows it to be indistinguishable from a diamond to the unaided eye.

What warranty options are available for Moissanite and Diamond Nexus?

Many moissanite jewelers offer limited lifetime warranties, covering any changes in color or clarity. Diamond Nexus typically offers a similar warranty that may also include guarantees against chips or scratches.

Are there any specific care instructions for maintaining moissanite or Diamond Nexus pieces?

Both moissanite and Diamond Nexus pieces can be cleaned with mild soap and warm water. They should be inspected annually by a professional jeweler for any loose settings and to maintain their sparkle.

What are the potential drawbacks of choosing moissanite over natural diamonds?

While moissanite is nearly as hard as diamonds and possesses a comparable sparkle, it has a different refractive index, which gives it a more rainbow-like fire that can be noticed under certain lighting conditions. This characteristic may be undesirable for those seeking the specific look of a natural diamond.


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