Manufactured diamond

Lab Grown Diamond vs Moissanite: A Comprehensive Comparison

In today's world, ethical and eco-friendly choices are more important than ever, especially when it comes to luxury items like gemstones. If you're in the market for a beautiful, ethical, and eco-friendly gem, you've likely come across two leading options: lab-grown diamonds and moissanite. While both of these sparkling gems offer a guilt-free alternative to traditional mined diamonds, choosing between them isn't as straightforward as you might think.

The purpose of this article is to provide a comprehensive comparison between lab-grown diamonds and moissanite, helping you make an informed decision. We'll delve into the unique properties, benefits, and costs of each, and even explore what people are saying about lab-grown diamonds vs moissanite on platforms like Reddit. Whether you're considering lab-grown diamond rings or moissanite jewelry, understanding the subtle differences between these two gems can be crucial for your final choice.

Stay tuned as we unravel the complexities of these two fascinating gemstones, offering insights that could be a game-changer for your next big purchase.

In the sections that follow, we'll explore the definitions, histories, and ethical considerations for both lab-grown diamonds and moissanite. We'll also discuss their refractive indices, color ranges, and pricing, among other factors, to help you find the gemstone that best suits your needs and preferences.

By the end of this article, you'll be well-equipped to make an informed decision, whether you're leaning towards the benefits of moissanite or the enduring value of lab-grown diamonds. So let's dive in!

What Are Lab Grown Diamonds?

When it comes to ethical and eco-friendly gemstones, lab-grown diamonds have been gaining significant attention. But what exactly is a lab-grown diamond, and how does it differ from its natural counterpart?

Definition and History of Lab-Grown Diamonds

A lab-grown diamond is a type of synthetic diamond created in a controlled environment, typically a laboratory. Unlike natural diamonds, which form over millions of years deep within the Earth's mantle, lab-grown diamonds are produced in a matter of weeks. They were first successfully created in the 1950s, and since then, advancements in technology have made them increasingly popular as an ethical alternative to mined diamonds.

How They Are Made: Carbon, Hydrogen, and Impurities

The creation of lab-grown diamonds involves replicating the natural conditions under which diamonds form. Using a combination of carbon, hydrogen, and trace amounts of impurities, these diamonds are grown either through High Pressure High Temperature (HPHT) or Chemical Vapor Deposition (CVD) methods. Both processes aim to mimic the extreme pressure and temperature conditions that produce natural diamonds, resulting in gems that are virtually identical to their natural counterparts in terms of chemical composition and physical properties.

Ethical and Eco-Friendly Aspects

One of the most compelling reasons to opt for lab-grown diamonds is their ethical and eco-friendly nature. Unlike mined diamonds, which can be associated with conflict zones and environmental degradation, lab-grown diamonds offer a guilt-free alternative. They are often cited as a more ethical choice because their production doesn't involve the social and environmental issues that plague the mining industry.

Range of Colors and Popular Choices

Lab-grown diamonds come in a wide variety of colors, including blue, yellow, and pink. However, the most popular (and often the most expensive) is the classic white diamond. The availability of different colors provides consumers with more options to match their personal preferences.

Other Names: Manufactured Diamonds, Synthetic Diamonds, Lab-Created Diamonds

It's worth noting that lab-grown diamonds go by several other names, including manufactured diamonds, synthetic diamonds, and lab-created diamonds. While these terms are often used interchangeably, they all refer to diamonds that were created in a lab rather than mined from the Earth.

Lab-Grown Diamonds vs Real vs Moissanite

While lab-grown diamonds are virtually identical to natural diamonds in terms of their physical and chemical properties, they should not be confused with moissanite, another lab-created gemstone. Moissanite is made from silicon carbide and has different properties, which we will explore in the next section.

In summary, lab-grown diamonds offer an ethical and eco-friendly alternative to natural diamonds, without compromising on beauty or quality. Whether you're interested in lab-grown diamond rings or other types of jewelry, these gems provide a responsible yet luxurious option.

What is Moissanite?

Definition and History of Moissanite

Moissanite is a naturally occurring silicon carbide with various crystalline polymorphs. It was discovered in 1893 by French chemist Henri Moissan while examining rock samples from a meteor crater in Canyon Diablo, Arizona. Initially, Moissan mistook these crystals for diamonds, but later in 1904, he correctly identified them as silicon carbide. The mineral form of silicon carbide was named in honor of Moissan. It's worth noting that artificial silicon carbide had already been synthesized in the lab two years before Moissan's discovery.

How It Is Made: Silicon Carbide

Moissanite is primarily made of silicon carbide (SiC). While natural sources are rare, synthetic moissanite is commonly used today. The synthetic form is created from thermal decomposition of the preceramic polymer poly(methylsilyne), requiring no binding matrix. Companies like North Carolina-based Cree Research, Inc., have developed commercial processes for producing large single crystals of silicon carbide, mainly for electronics use.

Durability and Refractive Index

Moissanite is incredibly durable, with a hardness rating of 9.25 on the Mohs scale, just below that of diamond. It has a high refractive index, ranging between nω=2.654 and nε=2.967, making it even more brilliant than diamonds in some optical properties. This high refractive index contributes to its exceptional sparkle.

Ethical and Eco-Friendly Aspects

Moissanite serves as an ethical and eco-friendly alternative to diamonds. It is often marketed as a lower-priced alternative that avoids the ethical and environmental issues associated with diamond mining. The gemstone is also used in high-pressure experiments and has applications in electronic and thermal fields due to its thermal conductivity.

Moissanite as an Alternative, Not a Substitute, for Diamonds

It's crucial to understand that moissanite is not a substitute but an alternative to diamonds. While it shares some properties with diamonds, such as durability, it has unique characteristics like a higher refractive index and different color grades. Moissanite is also birefringent, meaning it splits light into separate beams depending on the source polarization, a property not found in diamonds.

In Summary

Moissanite offers a compelling alternative in the debate of "lab grown diamond vs moissanite." With its unique properties, ethical sourcing, and lower price point, it stands as a strong contender against lab-grown diamonds. Whether you're considering lab grown diamond rings or moissanite jewelry, understanding the benefits of moissanite can be a game-changer for your next big purchase.

The Differences Between Lab-Grown Diamonds and Moissanite

Refractive Index

What is the Refractive Index and Why Does It Matter?

The refractive index is a measure of how much a material bends light as it passes through it. This property is crucial for gemstones like lab-grown diamonds and moissanite because it affects their brilliance, or sparkle. A higher refractive index generally means more sparkle, making it an essential factor to consider when comparing lab-grown diamonds vs moissanite.

Refractive Index of Lab-Grown Diamonds and Moissanite

Lab-grown diamonds have a refractive index similar to that of natural diamonds, ranging from 2.417 to 2.419. On the other hand, moissanite has a higher refractive index, with values of nω=2.654 and nε=2.967. This difference in refractive index is one of the key factors that set these two gemstones apart.

Moissanite's Higher Refractive Index and Its Impact on Appearance

Moissanite's higher refractive index gives it an edge when it comes to sparkle. The gemstone exhibits more fire, or colorful flashes of light, compared to lab-grown diamonds. This characteristic often makes moissanite more eye-catching, especially when viewed under certain lighting conditions. However, some people find this extra sparkle to be too much, preferring the more subdued brilliance of lab-grown diamonds.


When it comes to the refractive index, moissanite has a higher value compared to lab-grown diamonds. This difference results in moissanite displaying more sparkle and fire, which could be either a benefit or a drawback, depending on individual preferences. Therefore, understanding the refractive index is crucial when making an informed decision between lab-grown diamonds vs moissanite.

Color and Clarity

When it comes to the topic of "lab grown diamond vs moissanite," one of the most critical factors to consider is color and clarity. Both lab-grown diamonds and moissanite offer a range of colors, but there are some key differences that can influence your choice.

Color Ranges

Lab-grown diamonds can vary in color from colorless to shades of yellow and brown, similar to their natural counterparts. The Gemological Institute of America (GIA) grades diamond color on a scale from D (colorless) to Z (light yellow or brown). Interestingly, the presence of nitrogen during the diamond's formation can influence its color. Lab-grown diamonds can also be engineered to have fewer impurities, resulting in a clearer, more colorless stone.

Moissanite, on the other hand, is generally colorless but can sometimes exhibit a yellow or grayish hue, especially in certain lighting conditions. Unlike diamonds, moissanite is not graded on the GIA scale but has its own grading system.


Clarity is another factor where lab-grown diamonds and moissanite differ. Lab-grown diamonds can have inclusions and blemishes, similar to mined diamonds. These inclusions are often microscopic and do not significantly affect the diamond's appearance. Moissanite is usually eye-clean, meaning it doesn't have visible inclusions or blemishes, making it a strong contender when considering "what is moissanite vs lab grown diamond" in terms of clarity.

Price and Value

When weighing lab-grown diamonds against moissanite, price and value are key considerations that set these gemstones apart.

Price Comparison

In terms of upfront price, moissanite is substantially more affordable than lab-grown diamonds. For example, a 1 carat round brilliant cut moissanite may retail for around $600 while a similar lab-grown diamond would cost approximately $2,600.

Price variations depend on factors like carat size, cut, and color grade. But across all quality grades, moissanite consistently rings in at a fraction of the price of equivalent lab-grown diamonds. This significant cost difference makes moissanite an appealing choice for budget-conscious shoppers.

Value Comparison

Diamonds retain and gain value over time in a way moissanite does not. The resale value of diamonds makes them a better investment compared to moissanite. Even though lab-grown diamonds cost more initially, their appreciating value makes them potentially worth the higher price for some buyers.

Additionally, diamonds carry deeper symbolic meaning surrounding commitment and eternity. For some, this intangible value offsets the lower cost of moissanite. Others appreciate diamonds as family heirlooms passed down across generations. These considerations contribute to perceptions of diamonds having greater worth.

In summary, moissanite’s lower retail pricing contrasts with diamonds’ superior resale value and enduring symbolic significance. This value perception further distinguishes moissanite as an affordable alternative, while diamonds are prized as precious gems. Carefully weighing price against value is key when choosing between these exceptional lab-created stones.

How to Find the Right One for You

So, you've read about the ethical considerations, the refractive indices, and the color and clarity options for both lab-grown diamonds and moissanite. Now comes the big question: "How do I choose between lab grown diamond vs moissanite?" In this section, we'll delve into the factors you should consider when making your decision, as well as how retailer markups can affect the price.

Factors to Consider

  1. Purpose: Are you buying a gemstone for an engagement ring, a piece of everyday jewelry, or for investment purposes? Your purpose will guide your choice. For example, if you're looking at "lab grown diamond rings vs moissanite," consider the long-term value and how often the ring will be worn.
  2. Budget: "Cost moissanite vs lab grown diamond" is a significant consideration. Moissanite is generally more budget-friendly, but if you're looking for an investment piece, a lab-grown diamond might be more suitable.
  3. Appearance: Do you prefer a stone with more sparkle or one that is more subdued? Remember, moissanite has a higher refractive index, which affects its sparkle.
  4. Color and Clarity: As discussed in the previous section, both gems offer a range of colors and clarity levels. If you're particular about these attributes, make sure to compare them closely.
  5. Ethical and Eco-Friendly Aspects: Both lab-grown diamonds and moissanite are ethical and eco-friendly choices, but your personal values may make one more appealing than the other.
  6. Longevity and Durability: Both stones are durable, but diamonds are the hardest known mineral. If durability is a concern, especially for everyday wear, this might influence your decision.
  7. Resale Value: If you ever plan to sell the gemstone, keep in mind that diamonds generally hold their value better than moissanite.

Retailer Markups

When considering "lab grown diamonds vs moissanite price," it's essential to be aware of retailer markups. These markups can significantly affect the final price you pay. Always compare prices from different retailers and consider buying from those who provide certificates of authenticity and transparent pricing.

In summary, choosing between a lab-grown diamond and moissanite involves various factors, including your budget, aesthetic preferences, and ethical considerations. By taking the time to weigh these factors, you'll be better equipped to make an informed decision that aligns with your needs and values. Whether you're comparing "moissanite vs lab grown diamond Reddit" opinions or scrutinizing "lab grown diamonds vs real vs moissanite," the choice ultimately boils down to what matters most to you.

Benefits and Costs

When weighing the options of lab-grown diamonds vs moissanite, it's helpful to summarize the unique benefits and relative costs of each gemstone. This section will outline the advantages that moissanite offers over lab-grown diamonds, along with a cost comparison.

Benefits of Moissanite

Moissanite has several notable benefits that give it an edge over lab-grown diamonds:

  • Higher refractive index resulting in exceptional brilliance and fire
  • Durable with a hardness of 9.25 on the Mohs scale
  • Generally eye-clean with very few blemishes or inclusions
  • Distinctive rainbow-like flashes not seen in diamonds
  • More affordability compared to diamonds of equivalent size
  • Ethically sourced without environmental degradation

While lab-grown diamonds do share some of these traits, moissanite’s combination of optical properties, durability, and ethical sourcing give it unique advantages. Many buyers are drawn to moissanite specifically for its unparalleled brilliance.

Cost Comparison

When it comes to cost, moissanite is substantially more affordable than lab-grown diamonds. According to Rare Carat, a 1 carat round cut moissanite costs around $600 while an equivalent lab-grown diamond costs approximately $2,600. This considerable price difference remains relatively consistent across various sizes and cuts.

Of course, factors like quality and specific retailer will impact the final price. But generally, moissanite offers comparable beauty at a fraction of the cost of a lab-grown diamond. For buyers on a budget, this cost savings may be the deciding factor.

In summary, moissanite stands out for its optical performance, durability, ethical sourcing, and affordability compared to lab-grown diamonds. These advantages explain moissanite’s rising popularity as an alternative engagement ring gemstone. When cost is a concern, moissanite delivers exceptional beauty and brilliance at a more accessible price point.

The Bottom Line

When comparing lab-grown diamonds and moissanite, it's clear these two gemstones share some similarities but also have distinct differences that set them apart. So what's the bottom line?

Both lab-grown diamonds and moissanite offer ethical, conflict-free alternatives to mined diamonds. Their creation in a controlled laboratory environment is better for the planet and avoids the controversies surrounding the diamond mining industry. So from an environmental and social responsibility standpoint, they are on par.

However, their optical and physical properties differ in some key ways. Moissanite exceeds diamonds in brilliance and fire due to its higher refractive index. Its exceptional hardness also makes it very durable. Meanwhile, diamonds showcase a more understated brilliance that some buyers prefer. Diamonds also hold value better compared to moissanite.

Ultimately, the decision comes down to personal preferences and budget. For those seeking maximum sparkle at an affordable price, moissanite is hard to beat. If you prefer a classic, elegant look and don't mind the higher price, lab-grown diamonds are a great choice.

If investing in jewelry, lab-grown diamonds may offer better resale value over time. But moissanite is arguably the more economical option. For everyday fashion jewelry, moissanite’s durability makes it very practical.

There's no universally superior option between these two stunning gemstones. By understanding the nuances, you can determine which one best aligns with your individual needs and preferences. With their shared ethical values and allure, you truly can't go wrong with either lab-grown diamonds or moissanite.


In the world of ethical gemstones, lab-grown diamonds and moissanite both offer compelling choices. As this article has explored, they have key similarities as well as some distinct differences.

Both gems provide sparkling beauty without the ethical concerns of mined diamonds. Their creation in laboratories rather than nature makes them an eco-friendly option. So for consumers prioritizing responsible sourcing, lab-grown diamonds and moissanite are leading choices.

However, moissanite exceeds diamond in brilliance and fire, while diamonds offer a more understated radiance. When it comes to cost, moissanite is substantially more affordable. But diamonds tend to hold their value better over time.

There are also nuances in terms of color grading and visibility of inclusions. The decision ultimately depends on the buyer’s individual needs and preferences. There is no definitively “superior” option between these two dazzling gemstones.

By carefully weighing all the variables—ethics, cost, appearance, durability—you can determine which choice best suits your goals. If opting for moissanite, research retailers to find the highest grade for optimal brilliance. For lab-grown diamonds, select certified stones graded by respected organizations like GIA.

Whichever gemstone you choose, you can feel confident knowing it is an ethically and environmentally responsible alternative to mined diamonds. With their stunning beauty and conscientious origins, both lab-grown diamonds and moissanite make cherished additions to any jewelry collection.


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