Shopping for an engagement ring and torn between moissanite and a lab-grown diamond? You're not alone — it's one of the most common questions we hear at Ben Garelick.
A few years ago, moissanite was the budget-friendly alternative to diamonds. But the market has shifted dramatically. Lab-grown diamond prices have dropped 50–70% since 2021, and the gap between moissanite and lab-grown diamonds is smaller than ever.
So which stone actually makes more sense in 2026? As a GIA-certified jeweler running a family business since 1952, I'll give you the honest breakdown — no spin, just facts and real prices.
In This Article
- What Are Lab-Grown Diamonds? (And What Are They Called?)
- What Is Moissanite?
- Side-by-Side Comparison Table
- The Price Gap Has Shrunk — 2026 Numbers
- Sparkle, Fire & Brilliance
- Durability & Hardness
- Resale Value & Long-Term Worth
- Which Is Better for an Engagement Ring?
- The Moissanite Market in 2026
- Who Should Pick Lab-Grown Diamonds?
- FAQ
- Ready to Shop?
What Are Lab-Grown Diamonds? (And What Are They Called?)
Lab-grown diamonds go by several names — you might see them called lab-created diamonds, cultured diamonds, synthetic diamonds, man-made diamonds, or engineered diamonds. Whatever the label, they're all the same thing: real diamonds grown in a laboratory instead of mined from the earth.
Lab-grown diamonds are created using one of two methods:
- HPHT (High Pressure, High Temperature): Mimics the natural conditions deep in the earth's crust where diamonds form.
- CVD (Chemical Vapor Deposition): Uses a gas mixture to build a diamond crystal atom by atom.
The result? A stone that is physically, chemically, and optically identical to a mined diamond. It has the same carbon crystal structure, the same hardness (10 on the Mohs scale), and the same brilliance. Lab-grown diamonds are graded by the same gemological labs — IGI and GIA — using the same 4C criteria (cut, color, clarity, carat).
The only difference is origin: one was formed over billions of years underground, and the other was created in weeks in a lab. To the naked eye — and even under magnification — high quality grown lab diamonds are indistinguishable when compared to natural.
Bottom line: A lab-grown diamond is a real diamond. It's not a diamond "alternative" — it's a diamond with a different birthplace.
What Is Moissanite?
Moissanite is a completely different gemstone. It's made of silicon carbide (SiC), not carbon, which means it is not a diamond — not even close at the chemical level.
The story of moissanite is genuinely interesting. In 1893, French scientist Henri Moissan discovered tiny crystals of silicon carbide in a meteorite crater in Arizona. Natural moissanite is incredibly rare — nearly all moissanite sold today is lab-created.
Charles & Colvard pioneered gem-quality moissanite in the late 1990s, and their Forever One™ line became the best-known moissanite brand. At Ben Garelick, we carry a selection of moissanite engagement rings and loose Forever One™ moissanite.
While moissanite is a durable stone (9.25 Mohs hardness), it behaves quite differently than a diamond — especially when it comes to how it handles light. And as we'll discuss below, the moissanite market has been under significant pressure as lab-grown diamond prices have fallen.
Lab-Grown Diamonds vs. Moissanite: Side-by-Side Comparison
Here's how the two stones stack up across every factor that matters:
| Property | Lab-Grown Diamond | Moissanite |
|---|---|---|
| Composition | Carbon (C) | Silicon Carbide (SiC) |
| Is it a diamond? | Yes — real diamond | No — different gemstone |
| Hardness (Mohs) | 10 (hardest known mineral) | 9.25 |
| Refractive Index | 2.42 | 2.65–2.69 |
| Fire (Dispersion) | 0.044 | 0.104 (2.4× more fire) |
| Brilliance | Classic white light reflection | Rainbow light flashes |
| Price (1ct equivalent) | ~$800–$1,400 | ~$300–$600 |
| Certification | IGI or GIA graded | Not graded by GIA/IGI |
| Resale Value | Moderate (tradeable, upgradeable) | Very low |
| Can a jeweler tell? | No (identical to mined diamond) | Yes (different sparkle pattern) |
The key takeaway: Lab-grown diamonds are real diamonds with a different origin. Moissanite is a different gemstone entirely that resembles a diamond but has fundamentally different optical and physical properties.
The Price Gap Has Shrunk — 2026 Numbers
This is the biggest change since we originally wrote this post — and it's the reason we updated it. Lab-grown diamond prices have plummeted over the past three years, and the price argument for moissanite just doesn't carry the same weight anymore.
Here are real prices from our current inventory:
| Stone | 1 Carat Round | 2 Carat Round |
|---|---|---|
| Lab-Grown Diamond (D, VS1) | $1,000–$1,400 | $1,500–$2,500 |
| Forever One™ Moissanite (DEF) | $400–$600 | $900–$1,400 |
| Natural Diamond (D, VS1) | $5,000–$8,000 | $15,000–$25,000 |
A few years ago, a 1-carat lab-grown diamond might have cost $3,000–$5,000. Today you can get excellent quality — D color, VS1 clarity, ideal cut — for under $1,500. The price difference between moissanite and lab-grown has narrowed from 5× to roughly 2×.
For most shoppers, spending an extra $500–$800 to get an actual diamond — one that's certified, harder, and holds its value better — is an easy decision. The price gap is no longer wide enough to justify choosing a non-diamond substitute for most engagement ring budgets.
Pro tip: Check out our Ring Builder to pair any lab-grown diamond with the setting of your choice and see the total price in real time.
◆ Behind the Showcase
In February 2026, we priced out two nearly identical engagement rings for a customer comparing moissanite and lab-grown options side by side. Both rings used a 14k white gold solitaire setting and a round center stone around 2 carats in size. The Forever One™ moissanite version came to $1900, while the IGI-certified lab-grown diamond version totaled $2750. The final difference was only $850. What surprised the customer most was not the pricing. It was how differently the stones looked under jewelry store lighting and natural daylight. After seeing both rings outdoors, they chose the lab-grown diamond because the sparkle pattern looked more "crisp white" instead of rainbow-heavy. That experience mirrors what we have seen repeatedly over the last 6 months as lab-grown pricing continues to fall.
— Peter Manka Jr., Owner at Ben Garelick
Sparkle, Fire & Brilliance: How They Actually Look Different
This is where the two stones diverge the most — and it's something you'll notice in person, especially in direct sunlight.
Lab-Grown Diamonds
Lab-grown diamonds reflect light the same way natural diamonds do: a balanced mix of white light (brilliance) and subtle colored light (fire). The sparkle is crisp, clean, and classic — exactly what most people picture when they think "diamond." Because lab-grown diamonds are diamonds, this is the authentic diamond sparkle everyone recognizes.
Moissanite
Moissanite has a higher refractive index (2.65–2.69 vs. 2.42) and 2.4× more dispersion (fire) than a diamond. In practice, this means moissanite throws off more rainbow-colored flashes, especially in bright or direct light.
Some people enjoy this extra fire. But many others find it looks "too sparkly" or disco-ball-like compared to a diamond's more understated elegance — and it's the biggest giveaway that a stone isn't a diamond. The difference is especially noticeable in larger stones (1.5+ carats).
If you're considering moissanite, we strongly recommend seeing one next to a lab-grown diamond in person before deciding. You're welcome to visit our showroom in Williamsville, NY, or chat with us online to see our 360° videos.
◆ Behind the Showcase
One exercise we regularly do in our showroom is placing a lab-grown diamond and a moissanite under three different lighting conditions: LED showroom lights, indirect daylight, and direct sunlight. In softer indoor lighting, many customers struggle to tell the difference at first glance. Direct sunlight changes that quickly. The moissanite produces larger rainbow flashes that move across the stone in broad streaks, especially in round cuts above 2 carats. The lab-grown diamond still throws fire, but the flashes appear smaller and more balanced with white light reflection. We have found that customers who originally preferred moissanite online often change their preference after seeing the stones outdoors for even a few minutes.
— Peter Manka Jr., Owner at Ben Garelick
Durability & Hardness: Which Lasts Longer?
Both stones are durable enough for daily wear. But lab-grown diamonds have a clear edge:
- Lab-Grown Diamond: 10 on the Mohs scale — the hardest known mineral. Extremely scratch-resistant. Will maintain its polish for generations.
- Moissanite: 9.25 on the Mohs scale — harder than sapphire (9) and most other gemstones, but not as scratch-resistant as diamond over decades of daily wear.
For an engagement ring you'll wear every day for the rest of your life, this hardness difference matters. Lab-grown diamonds resist scratching better, maintain their surface polish longer, and won't show wear over time the way softer stones eventually can.
Both stones resist heat (safe during jewelry repairs), chemicals (fine with everyday cleaning products), and chipping (both have good toughness).
Resale Value & Long-Term Worth
This matters to a lot of engagement ring buyers — and it's an area where lab-grown diamonds are clearly superior:
Lab-Grown Diamonds retain moderate resale value. They're certified by IGI or GIA, widely recognized, and have a fair chance at being resold.
Moissanite has very limited resale value. It's not a diamond, it's not graded by major gemological labs in the same way, and the secondary market is thin. Most jewelers won't buy back moissanite, and there's no meaningful upgrade path.
If you think of your engagement ring as any kind of long-term investment, lab-grown diamonds are the clear choice. Although, at Ben Garelick we do not recomend buying jewelry or diamonds (lab or natural) for investment purposes.
Which Is Better for an Engagement Ring?
For most couples shopping for an engagement ring in 2026, we recommend lab-grown diamonds over moissanite. Here's why:
- They're real diamonds — with all the tradition, symbolism, and recognition that comes with it.
- They're certified — IGI/GIA graded, so you know exactly what you're getting.
- The price gap has nearly closed — a few hundred dollars more gets you an actual diamond.
- They hold their value — upgradeable and tradeable (in some cases), unlike moissanite.
- Classic sparkle — the white-light brilliance everyone associates with a diamond, not the rainbow flash that can look artificial.
- They're ethical — no mining, smaller environmental footprint.
The only scenario where moissanite still has a meaningful advantage is if your absolute top priority is getting the largest possible stone on the tightest possible budget. A 3-carat moissanite is significantly cheaper than a 3-carat lab-grown diamond. But for 1–2 carat stones — which is what most engagement ring shoppers are looking at — the price difference is modest enough that getting an actual diamond is the smarter call.
Already leaning toward lab-grown? Check out our Best Lab-Grown Engagement Rings Under $5,000 buyer's guide — we handpicked 9 rings across every style and price point.
The Moissanite Market in 2026
We wouldn't be giving you the full picture without addressing what's happening in the moissanite industry — because it affects the long-term value of your purchase.
In March 2026, Charles & Colvard — the original creator and largest manufacturer of gem-quality moissanite — filed for Chapter 11 bankruptcy. The company's revenue had dropped from $43 million in 2022 to just $16 million in 2025, with losses every year since 2023.
The reason? According to the company's own court filings, falling lab-grown diamond prices made moissanite harder to sell. When lab-grown diamonds cost 5× more than moissanite, the value proposition was clear. Now that the gap has shrunk to 2×, many buyers who would have chosen moissanite are choosing lab-grown diamonds instead.
This isn't meant to scare anyone away from moissanite — Charles & Colvard has said they intend to continue operating, and other moissanite producers exist. But it does signal a broader market shift: lab-grown diamonds have become the dominant alternative to mined diamonds, and moissanite's market share is shrinking.
For engagement ring shoppers, the practical takeaway is this: if you choose moissanite, understand that the market for these stones is contracting, which may affect availability, variety, and resale options in the future.
Who Should Pick Lab-Grown Diamonds?
Lab-grown diamonds are the right choice for the vast majority of engagement ring shoppers in 2026:
- Couples who want a real diamond without the natural-diamond price tag.
- Savvy shoppers who want IGI/GIA certification and grading reports.
- Anyone who values resale or upgrade options — lab-grown diamonds have a better chance at being traded in and upgraded.
- Ethical buyers — lab-grown diamonds don't require mining and have a smaller environmental footprint.
- Anyone shopping in the 1–2 carat range — the price premium over moissanite is modest and well worth it.
Our lab-grown diamonds start under $800 for a beautifully cut 1-carat stone, and our lab-grown engagement ring settings start from $1,300. Use the Ring Builder to design your perfect ring and see real-time pricing.
Shop Lab-Grown Engagement Rings →
Read: Best Lab-Grown Rings Under $5K →
When Moissanite Still Makes Sense
That said, moissanite can still be a good choice in certain situations:
- Budget-maximizers who want size — if you want a 3+ carat look for under $2,000, moissanite delivers.
- Fashion jewelry and right-hand rings — for non-engagement pieces, moissanite's extra fire can be a showstopper.
- Travel rings — some people buy a moissanite ring to wear while traveling so their diamond stays safe at home.
Browse our moissanite collection →
Frequently Asked Questions
Is moissanite a lab-grown diamond?
No. Moissanite is a completely different gemstone made of silicon carbide. Lab-grown diamonds are real diamonds made of carbon. They just happen to both be created in laboratories — but they are different minerals with different properties.
What are lab-grown diamonds called?
Lab-grown diamonds are also called lab-created diamonds, man-made diamonds, synthetic diamonds, cultured diamonds, or engineered diamonds. Regardless of the name, they are chemically, physically, and optically identical to natural mined diamonds.
Can you tell the difference between moissanite and a lab-grown diamond?
In dim or indoor lighting, a small moissanite can look similar to a diamond. But in direct sunlight or bright light, moissanite shows noticeably more rainbow-colored fire, especially in stones over 1 carat — it's the biggest giveaway. A trained jeweler can easily distinguish them using a loupe or thermal tester.
Is moissanite cheaper than a lab-grown diamond?
Yes, but the gap is much smaller than it used to be. A 1-carat moissanite runs about $400–$600, while a comparable lab-grown diamond is $800–$1,400. A few years ago, lab-grown diamonds were 5× more expensive than moissanite — today it's closer to 2×, making lab-grown the better value for most buyers.
Do lab-grown diamonds hold their value?
Lab-grown diamonds retain moderate resale value — significantly more than moissanite or cubic zirconia, though much less than rare natural diamonds.
Are lab-grown diamonds and moissanite the same thing?
No. This is one of the most common misconceptions. Lab-grown diamonds are real diamonds (carbon, Mohs 10, certified by IGI/GIA). Moissanite is silicon carbide (Mohs 9.25, not certified by major diamond grading labs). They look similar at a glance but are fundamentally different stones.
Which lasts longer — moissanite or lab-grown diamond?
Lab-grown diamonds are harder (10 vs. 9.25 Mohs) and more scratch-resistant over decades of daily wear. Both will survive normal use, but a lab-grown diamond is the better choice for a ring you'll wear every day for a lifetime.
Is moissanite worth it in 2026?
For most engagement ring shoppers, no — the value proposition has shifted. With lab-grown diamond prices dropping dramatically and the moissanite market contracting (Charles & Colvard filed for Chapter 11 in March 2026), spending a bit more for an actual certified diamond makes more sense for most buyers. Moissanite can still work for budget-maximizers who want the largest possible stone or for fashion jewelry.
Ready to Choose Your Stone?
We recommend lab-grown diamonds for most engagement ring shoppers — but whatever you choose, we're here to help:
- Shop Lab-Grown Engagement Rings — settings from $1,300, pair with any lab-grown diamond
- Use Our Ring Builder — design a custom lab-grown diamond ring with real-time pricing
- Read: Best Lab-Grown Rings Under $5K — our handpicked buying guide
- Browse Moissanite Rings — if moissanite is right for you, we carry those too
Visit us at our Williamsville, NY showroom to see moissanite and lab-grown diamonds side by side — there's no substitute for seeing them in person. Not nearby? Chat with us online, call (716) 631-1584, or text (888) 841-5391. Our sparkle consultants can send you 360° videos of both stones so you can decide with confidence.
Peter Manka Jr. is a GIA-certified jeweler and owner of Ben Garelick, a family-owned jewelry store in Buffalo/Williamsville, NY since 1952. With 3,600+ five-star reviews across platforms, Ben Garelick is trusted by couples nationwide for engagement rings, custom designs, and expert guidance.
