How to Tell Moissanite from a Diamond — And Why $100 Can Look Like $5,000
How to Tell a Moissanite from a Diamond (and Why You Might Want To
Moissanite has gained massive popularity in the past few years — and for good reason. It’s nearly indistinguishable from a diamond to the naked eye, yet it’s a fraction of the cost. But if you’ve ever wondered how to tell a Moissanite from a diamond, here’s what you need to know.
Brilliance and Fire: Moissanite Shines Brighter
Moissanite actually has a higher refractive index (2.65–2.69) than diamonds (2.42). This means it reflects more light, giving it more fire and rainbow sparkle than a traditional diamond. If you see rainbow flashes in sunlight or under strong lighting, it’s likely Moissanite.
Diamonds reflect more white light, so their brilliance is more subdued. Under side-by-side comparison, Moissanite looks more lively — especially in larger carat sizes.
Hardness: Close, But Not the Same
Diamonds rank 10 on the Mohs scale, making them the hardest gemstone known. Moissanite ranks 9.25, which is still harder than nearly all other gemstones — meaning it’s extremely durable and resistant to scratching.
While a diamond may edge out Moissanite in hardness, Moissanite offers more than enough durability for daily wear — including engagement and wedding rings.
Inclusions and Clarity
Most natural diamonds come with some inclusions or blemishes due to their natural formation. Moissanite, being lab-created, tends to have better clarity and fewer imperfections, often graded VVS1 or higher.
This makes Moissanite a great option for those who want a flawless look without paying premium prices.
Price: Moissanite Wins Every Time
This is where things get real. A 1-carat diamond can cost $4,000–$8,000+, depending on clarity and color. A 3-carat diamond ring can easily exceed $30,000.
Now compare that to Moissanite.
At José Lux, you can get:
- A 3ct GRA-certified D color Moissanite ring for under $100
- A 4ct premium silver ring with the same sparkle for less than a fraction of a diamond’s cost
You get a luxury look, ethical sourcing, GRA certification, and lifetime durability — all without paying thousands.
How to Tell the Difference (Scientifically)
Want to know for sure whether it’s Moissanite or diamond?
Here are 3 reliable ways:
- Fog Test: Moissanite clears fog faster than diamonds.
- Double Refraction: Under magnification, Moissanite shows a double refractive pattern.
- Thermal Conductivity Test: Diamonds conduct heat better, so a diamond tester may detect the difference.
But here’s the kicker: if you can’t tell without special equipment… do you really need to spend $5,000 instead of $100?
Why More People Are Choosing Moissanite
Aside from the sparkle, durability, and low price, Moissanite is:
- Conflict-free
- Lab-grown and eco-friendly
- Certified by GRA with traceable authenticity
- Backed by lifetime warranties at reputable sellers like José Lux
With Moissanite, you don’t compromise on beauty — only on inflated prices.
2 GRA-Certified Moissanite Rings Under $100 You’ll Love
At José Lux, we make luxury affordable. Our Moissanite rings are handcrafted from premium sterling silver, plated in white gold, and feature GRA-certified stones — all for under $100.
Here are two bestsellers that combine elegance, size, and unbeatable value:
1. Moissanite Engagement Rings 3ct D Color | Classic Solitaire Silver
This timeless beauty features a 3-carat D color Moissanite in a minimalist 4-prong solitaire setting. Perfect for proposals, gifts, or everyday elegance.
✅ GRA Certified
✅ Premium Silver
✅ Lifetime Warranty
✅ Free Worldwide Shipping
Shop this ring now
2. Moissanite Engagement Rings 4ct Center D Color | Premium Silver
Make a bold statement with this showstopping 4-carat Moissanite ring, carefully set in white gold-plated sterling silver. Its fire and clarity rival diamonds worth 100x more.
✅ GRA Certified D Color
✅ Handcrafted Finish
✅ 30-Day Returns
✅ Under $100
View full details
Final Thoughts
If you're asking how to tell a Moissanite from a diamond — remember: the sparkle might give it away, but the smart choice is clear.
Why spend thousands, when you can’t tell the difference?