Moissanite Stone FAQs
Shopping for moissanite gemstones for sale? Brilliant moissanite dazzles with unmatched fire, exceptional durability, and ethical origins, making it a popular choice for modern jewelry. Below, we've answered the most common questions to help you choose the right moissanite stone for your next piece.
What is a moissanite stone?
A moissanite stone is a lab-created gemstone made from silicon carbide crystals, prized for its exceptional brilliance and fire. With a refractive index of 2.65 to 2.69, moissanite actually surpasses diamond in sparkle, and its 9.25 Mohs hardness makes it one of the most durable gemstones on earth. Originally discovered in a meteorite crater in 1893, natural moissanite is extremely rare, so today's stones are expertly grown in laboratories at a fraction of what mined diamonds cost.
How do I choose the best loose moissanite stone?
Choosing the best loose moissanite stone comes down to shape, clarity, color grade, and carat weight. Look for stones graded in the D to F colorless range if you want a comparable look to a traditional diamond, or explore near-colorless and fancy hues for something with more character. The cut matters just as much as size. Ultimately, a well-cut stone will maximize the fire and brilliance that set moissanite apart from its natural counterparts.
- Working with the best place to buy loose moissanite means every stone is vetted for cut quality and color consistency before it reaches you.
Is a moissanite stone durable enough for an engagement ring?
A moissanite stone is absolutely durable enough for an engagement ring you'll wear every day. At 9.25 on the Mohs hardness scale, moissanite resists scratches and chips from daily wear, making it one of the toughest gemstones available. Its properties hold up beautifully over years of use, so your ring looks as stunning on your anniversary as it did on day one.
Is moissanite a real stone or a fake diamond?
Moissanite is a real gemstone, not a fake diamond. First discovered in a meteorite crater, natural moissanite is one of the rarest minerals on earth, which is why today's stones are ethically created in labs rather than mined. Its distinct optical properties, chemical composition, and 9.25 Mohs hardness make it a gemstone in its own right, not an imitation of anything else.
How is a moissanite stone different from a diamond or lab diamond?
The main difference between a moissanite stone and a diamond (natural or lab-grown) is how each interacts with light. Moissanite has a higher refractive index, which produces more fire and rainbow sparkle than diamond. They also differ in composition: diamond is pure carbon, while moissanite is silicon carbide, with properties that make it nearly as hard at a significantly lower price point.
When you buy moissanite stone jewelry instead of diamond, you get more fire and more value. For a deeper comparison, see our full guide to moissanite vs lab diamond.
What's better, cubic zirconia or moissanite?
Moissanite is far superior to cubic zirconia (CZ) in both longevity and brilliance. With a Knoop hardness of 3,000, moissanite is 219% harder than CZ, so it resists scratching and wear significantly better. Its light dispersion is also 58% higher, producing a sparkle that CZ simply can't match over time.
See our full cubic zirconia vs moissanite comparison for the complete breakdown.
What's better, white sapphire or moissanite?
A moissanite stone offers significantly more fire than white sapphire, which can appear dull by comparison. Moissanite's superior hardness also provides better resistance to scratching and everyday damage. Combined with its ethical, lab-created origins, moissanite is the stronger choice for lasting beauty and peace of mind.
Explore our full white sapphire vs moissanite comparison.
Does a moissanite stone get cloudy or lose sparkle?
A moissanite stone does not get cloudy or lose its sparkle over time. Its silicon carbide structure is chemically stable, so it won't dull, yellow, or degrade the way some lower-hardness gems can. With basic care like occasional cleaning, your moissanite will stay as brilliant decades from now as it is today.
Learn more about long-term wear in our guide on whether moissanite lasts.
Why do loose moissanite stone prices vary?
Loose moissanite stone prices vary based on carat weight, cut quality, color grade, and the brand behind the stone. Larger stones and precision-cut shapes that maximize fire will cost more, while near-colorless options in popular cuts tend to offer the best value on the market. Even at the higher end of the range, moissanite stones for sale cost a fraction of what you'd spend on a comparable mined diamond.
