Diamond vs Moissanite: Explore the Subtle Differences

When choosing a stone for your engagement ring, the question often arises:
Should I choose a diamond or moissanite?

At first glance, they may appear similar. Both are brilliant, white stones often used in fine jewellery. But under closer inspection—especially in the way they perform under light, wear over time, and align with your values—there are key differences.

In this guide, we’ll take a clear, side-by-side look at diamond vs moissanite, helping you understand what makes each stone unique so you can make a confident, informed decision.

What Are Diamonds and Moissanite?

💎 Diamonds

• Made of carbon atoms

• Naturally formed or lab grown

• Known for their hardness, brilliance, and heritage

• Certified by GIA or IGI using the 4Cs

✨ Moissanite

• Made of silicon carbide

• Always lab created (natural moissanite is extremely rare)

• Known for extreme fire and affordability

• Sold by size, not by the 4Cs

Though they look similar to the naked eye, they differ in physical structure and how they interact with light.

Diamond vs Moissanite – The Key Differences

How Do They Look in Real Life?

From a distance, it’s hard to tell the difference. But under lighting or magnification:

🔍 Diamonds:

• Return more white light

• Appear slightly more crisp and clear

• Have a classic, timeless look

🔍 Moissanite:

• Shows more fire (rainbow light dispersion)

• Can appear warmer or more fiery in sunlight

• May give a “disco ball” effect in some cuts

💡 Moissanite’s fire can be a positive or negative depending on your style.

Cost Comparison: How Much Can You Save?

Moissanite is significantly more affordable:

This price difference means you can opt for:

• A larger stone

• A premium setting

• Or simply stay within budget without sacrificing beauty

Durability & Longevity

Diamonds are the hardest natural material on Earth, ranking 10/10 on the Mohs scale.

Moissanite ranks 9.25, which still makes it incredibly durable for everyday wear. It can withstand:

• Scratches (in most environments)

• Heat

• Pressure and impacts

However, diamonds may retain a cleaner polish over decades with less maintenance.

Which One Is More Ethical?

✅ Moissanite:

• Always lab grown

• Low environmental impact

• No mining, no conflict zones

✅ Lab Grown Diamonds:

• Conflict-free and sustainable

• GIA or IGI certified

• Traceable sourcing

Both are strong ethical choices—but moissanite edges ahead slightly due to its 100% synthetic origin and even lower carbon footprint.

How to Choose Between the Two

| Choose Moissanite if:

• You want maximum sparkle on a smart budget

• You prefer a bold, fiery look

• You value sustainability above tradition

• You’re designing a statement or fashion-forward ring

| Choose Diamond if:

• You want a classic, traditional stone

• You prefer subtle sparkle and crisp brilliance

• You’re prioritising resale, heirloom, or legacy value

• You’re drawn to the idea of a diamond itself

Our Professional Recommendation

At Diamond Lab, we offer both lab grown diamonds and premium D/VVS1 moissanite, because we know every love story—and budget—is different.

We recommend seeing both side-by-side before deciding. You may fall in love with the refined fire of moissanite or the timeless sparkle of a well-cut lab diamond.

Final Thoughts: Beauty Is in the Eye—and the Light

Diamonds and moissanite each have their strengths. There’s no right or wrong choice—only what reflects your values, your style, and your story.

Let your ring shine for the reasons that matter to you.

Compare Them with an Expert

Book a consultation at our Perth showroom or online to view moissanite and diamonds side by side, ask questions, and customise your dream piece.

📍 Contact Diamond Lab