Top 10 Moissanite Myths — Debunked with Science & Facts

Moissanite is silicon carbide (SiC) — a naturally occurring mineral discovered by French chemist Henri Moissan in 1893 inside a meteorite crater in Arizona. He won the Nobel Prize in Chemistry for this discovery. It is not a diamond substitute. It's not a simulated stone. It's a distinct mineral species with its own chemical, optical, and physical properties.

The moissanite sold in jewelry today is lab-grown, using the same controlled crystal-growth process that makes lab-grown diamonds. But "lab-grown" doesn't mean "fake." The crystal structure is identical to what exists in nature. You can hold it in your hand. A certified gemologist can examine it. It is a real gemstone.

Here's what the diamond industry doesn't want you to know: moissanite has more brilliance and fire than diamond. Its refractive index is 2.65 vs diamond's 2.42. What does that mean in plain English? It sparkles more.

The "fake" look comes from low-quality moissanite with poor cut proportions, or from cubic zirconia being passed off as moissanite. Yimola's moissanite is precision-cut to maximize white brilliance (sparkle) while maintaining natural-looking colored fire. Under normal indoor and outdoor lighting, nobody is "telling" — especially not without professional equipment.

The comparison table below shows why the visual argument doesn't hold up:

This one comes from confusion with cubic zirconia (CZ). CZ is made of zirconium dioxide — a material that is naturally colorless but has surface-level stability issues that can cause clouding and color changes over years of wear. Moissanite is silicon carbide. It is one of the most chemically stable materials known to science. It doesn't oxidize, discolor, or degrade.

Some people notice a slight warmth in certain moissanite stones under specific artificial lighting (warm LED, certain fluorescent). This is not the stone changing color — it's a characteristic of how moissanite refracts warm-spectrum light. The effect varies by cut and stone size. Premium cut moissanite minimizes this.

Most can't. Here's why: the vast majority of jewelers use a pen-style diamond tester that measures thermal conductivity. Moissanite conducts heat in a similar range to diamond, so these testers frequently register moissanite as diamond — or give inconclusive readings.

Distinguishing moissanite from diamond requires multi-wavelength conductivity testing or a refractometer — equipment most retail jewelers don't own. A bench jeweler working with a loupe and years of experience may develop a feel for it, but "feel" isn't confirmation. You'd need a GIA-certified gemologist with the right tools to definitively identify it.

If someone claims they can always tell by eye — run. That's either experience with lower-quality moissanite or just trying to justify a diamond price tag.

9.25 on the Mohs scale means moissanite is harder than every common gemstone — sapphire, ruby, emerald, aquamarine, amethyst — all of which are sold daily as engagement ring center stones. You could strike moissanite against concrete and it wouldn't scratch. You could wear it daily for decades and it would still be clear and brilliant.

The only thing harder is diamond (10). But the practical difference between 9.25 and 10 is essentially zero for jewelry. You'll never notice it. What you will notice is the price difference.

Charles & Colvard has been selling moissanite as engagement ring center stones since 1998 — nearly 30 years. The first generation of moissanite engagement rings are still being worn today, still sparkling. The longest-serving moissanite company in the world, Foreverb, has sold hundreds of thousands of moissanite engagement rings for over a decade.

Moissanite's hardness, brilliance, and durability meet every standard required for daily-wear engagement jewelry. There is no technical or gemological reason it can't be an engagement ring stone. The "fashion jewelry only" narrative is a marketing position, not a gemological fact.

This is the most common visual complaint, and it has a real origin: moissanite does have more fire (colored light dispersion) than diamond — 0.104 vs 0.044. Under certain lighting (especially fluorescent store lights), this can create visible rainbow flashes. The question is whether it's "too much."

The answer is: it depends on the cut. Lower-quality moissanite with deep pavilion angles and poor crown proportions amplifies fire to an unnatural degree. Premium cut moissanite — cut to maximize white brilliance while managing fire — looks completely natural in all lighting conditions. It sparkles differently than diamond, not worse.

Yimola sources only premium-cut moissanite for this reason. We explicitly reject stones that show excessive fire under normal lighting conditions. You should too — not just for moissanite, but for any gemstone.

"Better" depends on what you value. If the goal is visual equivalence to a mined diamond at a lower price, moissanite wins. Lab-grown diamonds cost 5–10x more than moissanite for virtually the same visual result. A 1-carat lab diamond runs $1,000–$3,000. A 1-carat equivalent moissanite runs $150–$350.

Lab-grown diamonds are real diamonds (carbon crystal structure). They have the same optical properties as mined diamonds — which means they have the same refractive index (2.42) and fire (0.044) as mined diamonds. Moissanite actually out-performs lab diamonds on brilliance and fire — at a fraction of the cost.

The only scenario where lab diamond might be "better" is if your objection to moissanite is purely emotional ("I want a real diamond"). That's a personal choice, not a gemological fact. We respect it. But for the buyer comparing specs: moissanite wins on value.

So does diamond. The "resale value" argument is used selectively against moissanite while ignoring that mined and lab-grown diamonds also lose 50–70% of their retail value the moment you leave the store.

A $5,000 mined diamond resells for $1,500–$2,500. A $1,500 lab-grown diamond resells for $300–$600. A $300 moissanite ring? It's jewelry, not an investment. The resale market for fine jewelry is thin across the board — moissanite isn't uniquely punished here.

If you're buying fine jewelry as an investment, you've been marketed to. Jewelry is a consumption good, not an investment vehicle. Buy what you love, at a price that makes sense for your life. Moissanite lets you do that.

This is the oldest trick in jewelry marketing. De Beers didn't just control diamond supply — they controlled the cultural meaning of engagement rings. "A diamond is forever" is the most successful advertising slogan in history, and it was paid for by people who wanted you to pay 10x more.

The "real engagement ring" concept is a marketing construct, not a universal truth. Millions of couples worldwide — Japan, China, Sweden, Germany — have culturally accepted non-diamond engagement rings for generations. Sapphire, ruby, emerald, and other gemstones have been used as engagement stones for centuries.

What makes an engagement ring "real" is the commitment it represents. The stone is just the stone. And moissanite — a real gemstone, harder than most, more brilliant than diamond — is more than qualified to symbolize that commitment.