Moissanite vs Diamond: Price, Durability & Appearance

If you're choosing between moissanite and diamond, you're not alone. Both stones are popular for engagement rings and fine jewelry, and both offer a more affordable path than traditional mined diamonds. But they're fundamentally different materials, and the choice comes down to what you value most: budget, durability, or a specific look.

This guide compares moissanite and diamond across price, durability, appearance, and certification, so you can make an informed decision.

What Is Moissanite?

Moissanite is a gemstone made of silicon carbide. It was first discovered in 1893 by French chemist Henri Moissan in a meteorite crater. Natural moissanite is extremely rare, so almost all moissanite sold today is created in a lab.

Moissanite is known for its high brilliance and fire. It actually has more light dispersion than diamond, which means it can throw more rainbow-colored flashes in certain lighting. On the Mohs hardness scale, moissanite ranks 9.25 out of 10, making it durable but slightly softer than diamond.

What Is a Diamond?

A diamond is a crystal made of pure carbon. It forms deep underground under extreme heat and pressure over billions of years. Diamonds rank 10/10 on the Mohs hardness scale, the hardest natural material on earth.

There are two types of diamonds available today: mined diamonds and lab grown diamonds. Lab grown diamonds are created in controlled environments using advanced technology that replicates the natural growth process. They are chemically, physically, and optically identical to mined diamonds, and the FTC officially classifies them as real diamonds.

At Ecglosty, we specialize in lab grown diamonds, which offer the same brilliance and durability as mined diamonds at a more accessible price point.

Price Comparison

Price is often the biggest factor when choosing between moissanite and diamond.

Moissanite is significantly cheaper than lab grown diamond, and much cheaper than mined diamond. The price gap widens as carat size increases.

However, price isn't the only factor. Moissanite and diamond have different resale values, different certification standards, and different visual characteristics. If you're comparing moissanite vs diamond price alone, moissanite wins. But if you factor in long-term value and certification, the comparison becomes more nuanced.

Durability Comparison

Both stones are durable enough for everyday wear, including engagement rings. Diamond is harder, but the difference in practical terms is small. Moissanite can scratch slightly more easily over decades of wear, but it's still highly resistant.

For most buyers, durability is not the deciding factor between these two stones. Both will last a lifetime with proper care.

Appearance: How They Look Different

This is where moissanite and diamond diverge most noticeably.

Brilliance and fire: Moissanite has more fire (rainbow-colored flashes) than diamond. In sunlight or under certain lighting, moissanite can show more colorful sparkle. Diamond has more brilliance (white light return) and a more balanced overall sparkle.

Color: Moissanite can have a slight yellow or green tint in some lighting, especially in larger stones. Diamonds are graded on a color scale from D (colorless) to Z (noticeable color). Lab grown diamonds are available in a full range of color grades.

Clarity: Both stones can have inclusions, but high-quality moissanite is typically eye-clean. Lab grown diamonds are graded on the same clarity scale as mined diamonds, and many are eye-clean as well.

Shape: Moissanite is available in most diamond shapes, including round, oval, emerald, and pear. However, some cuts are more readily available in diamond than in moissanite.

Certification: What to Look For

Certification is one of the biggest differences between moissanite and diamond.

Moissanite is not typically certified by major gemological labs like GIA or IGI. Some moissanite brands provide their own grading reports, but these are not standardized across the industry.

Lab grown diamonds can be certified by independent labs such as IGI (International Gemological Institute) or GIA (Gemological Institute of America). These certificates verify the diamond's 4Cs: cut, color, clarity, and carat weight. At Ecglosty, every stone is IGI certified, so you know exactly what you're getting.

If certification and verifiable quality matter to you, lab grown diamond has a clear advantage.

Moissanite Rings vs Diamond Rings

When it comes to rings, both moissanite and diamond work well. The choice often comes down to budget and personal preference.

Moissanite rings are a good option if you want a large stone at a lower price point. They're durable, brilliant, and available in many styles.

Diamond rings, especially lab grown diamond rings, offer certification, a wider range of color and clarity grades, and a more traditional look. They also hold their value better than moissanite in most cases.

At Ecglosty, we offer lab grown diamond rings in 14K or 18K white gold, yellow gold, rose gold, and platinum. Every stone is IGI certified.

Which Should You Choose?

Here's a simple breakdown:

Choose moissanite if:

• Budget is your top priority

• You want a large stone for a lower price

• You like the extra fire and rainbow sparkle

• Certification is not important to you

Choose lab grown diamond if:

• You want a certified, verifiable stone

• You prefer a more traditional diamond look

• You want a wider range of color and clarity options

• You plan to keep the piece for decades

Both are valid choices. The right one depends on what matters most to you.

Final Thoughts

Moissanite and diamond are both beautiful, durable stones. Moissanite wins on price. Lab grown diamond wins on certification and long-term value. If you're looking for a stone that's chemically identical to mined diamond, IGI certified, and available in a full range of metals and styles, explore our lab grown diamond collection.

Information current as of September 2026.