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Lab-Grown Diamonds vs. Moissanite: Everything You Need to Know

Lab-grown diamonds and Moissanite are popular alternatives to natural diamonds, offering beauty and affordability. But what sets them apart? This blog breaks down the key differences in material, brilliance, price,...

If you’re exploring options for affordable yet stunning gemstones, you’ve likely come across terms like "lab-grown diamonds" and "Moissanite." But what are they? How are they different from natural diamonds? And most importantly, which one should you choose?

In this blog, we’ll break it all down in a clear and easy-to-understand way to help you make the best decision for your jewelry needs.


What Are Lab-Grown Diamonds?

Lab-grown diamonds are real diamonds—just created in a lab instead of being mined from the Earth. They have the same chemical composition (pure carbon) and physical properties as natural diamonds.

Here’s why lab-grown diamonds stand out:

  • Hardness: With a perfect 10 on the Mohs scale, they’re just as durable as natural diamonds.
  • Purity: Lab-grown diamonds are often purer than natural ones. While most natural diamonds contain traces of other elements, lab-grown diamonds can be nearly 100% carbon, just like the rare Type IIa natural diamonds prized by collectors.

From appearance to brilliance, lab-grown diamonds are indistinguishable from natural diamonds. However, one key difference lies in the price. Lab-grown diamonds are significantly more affordable, which makes them a fantastic choice for those seeking beauty and quality on a budget.


What Is Moissanite?

Moissanite is a gemstone that often gets mistaken for a diamond, but it’s actually quite different.

Chemically, Moissanite is made of silicon carbide (SiC), not pure carbon like diamonds. Natural Moissanite is so rare and tiny that it can’t be used for jewelry. What you see on the market today is lab-grown Moissanite.

Why Is Moissanite Popular?

  • Affordable: Moissanite is much cheaper than both natural and lab-grown diamonds. A one-carat Moissanite can cost as little as $50, while a lab-grown diamond of the same size might cost $800, and a natural diamond several thousand dollars.
  • Brilliance: Moissanite sparkles even more than diamonds, thanks to its higher refractive index. In some lighting, this sparkle can show blue or rainbow flashes, which some people love, though others might prefer the subtle shine of a diamond.
  • Durability: With a hardness of 9.25 on the Mohs scale, Moissanite is harder than most gemstones (like sapphire or ruby) and perfect for everyday wear.

Key Differences Between Lab-Grown Diamonds and Moissanite

Feature Lab-Grown Diamonds Moissanite
Material Pure carbon Silicon carbide (SiC)
Hardness 10 (Mohs scale) 9.25 (Mohs scale)
Price More expensive than Moissanite Very affordable
Brilliance Subtle and elegant Extra sparkly, with rainbow hues
Certification Comes with GIA/IGI certification No international certification


Buying Tips for Lab-Grown Diamonds and Moissanite

Here’s how to choose between the two based on your preferences and budget:

1. Budget-Friendly Jewelry

If you’re looking for an affordable option, Moissanite is an excellent choice. Its sparkle and durability make it perfect for necklaces, earrings, or statement rings without breaking the bank.

2. For an Authentic Diamond Look

If you want a stone that’s nearly identical to a natural diamond, go for a lab-grown diamond. They’re an ideal choice for engagement rings or heirloom-quality jewelry pieces.

3. Everyday Wear

Both Moissanite and lab-grown diamonds are durable enough for everyday wear, but if you’re investing in a ring or bracelet that gets a lot of attention, lab-grown diamonds may offer a more classic and timeless look.

4. Focus on the Shape

If you’re choosing Moissanite as a diamond alternative, stick to shapes that closely mimic diamonds, such as round cuts. These shapes make it harder to distinguish Moissanite from diamonds, even up close.

5. Where to Save and Where to Splurge

For items like necklaces and earrings, Moissanite is a great substitute since these pieces aren’t often closely scrutinized. However, for rings or pieces that draw a lot of attention, especially with unique cuts, lab-grown diamonds are worth the investment.


Why Certifications Matter

One major difference between lab-grown diamonds and Moissanite is certification.

  • Lab-Grown Diamonds: Often come with certifications like GIA (Gemological Institute of America) or IGI (International Gemological Institute). These certifications guarantee the stone’s authenticity and quality.
  • Moissanite: Does not come with international certifications because its cost makes such evaluations impractical.

If certification and authenticity matter to you, lab-grown diamonds are the way to go.


My Personal Buying Advice

  • If Budget Isn’t a Concern: Choose lab-grown diamonds or natural diamonds for their timeless beauty, authenticity, and investment value.
  • If You’re Budget-Conscious: Opt for Moissanite for affordable sparkle. Just make sure you don’t overpay—there’s no need to spend hundreds of dollars on a Moissanite when it’s meant to be an affordable option.

Final Thoughts

Both lab-grown diamonds and Moissanite have their strengths, and the choice ultimately comes down to your budget and personal preferences. Lab-grown diamonds offer unmatched authenticity and timeless elegance, while Moissanite is perfect for those who want maximum sparkle at a fraction of the cost.

No matter what you choose, what matters most is finding a piece of jewelry that makes you happy and fits your lifestyle. Whether it’s a stunning Moissanite necklace or a luxurious lab-grown diamond ring, your jewelry should reflect your unique style and story.

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About the Author: Marlin – Founder of Evergleam

Hi, I’m Marlin, the founder of Evergleam and a lifelong lover of gemstones. From cultured diamonds to vibrant semi-precious stones, I believe jewelry should be beautiful, meaningful, and accessible to everyone.

As a former industrial designer and the founder of KIWI Design, I’ve always had an eye for creativity and craftsmanship. Now, I’m bringing that passion into the world of jewelry, even learning goldsmithing to create pieces by hand.

At Evergleam, I celebrate the possibilities of modern materials, like cultured gemstones and multi-layered 925 silver, offering stunning designs that suit all budgets. Whether it’s a simple everyday piece or a luxurious statement, I believe jewelry should reflect your unique style and bring you joy.

Let’s discover the magic of gemstones together! ✨

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