TLDR
A moissanite ring features a lab created silicon carbide gemstone with intense rainbow fire and strong durability at a fraction of diamond pricing. A diamond ring (mined or lab grown) offers classic white sparkle, slightly higher hardness, and traditional identity. Both work for engagement rings. The right choice depends on whether you love moissanite’s bold fire on its own terms or specifically want a diamond.
Which ring will still feel right on your hand six months from now? That is the real question behind the moissanite ring vs diamond ring debate, and it deserves a more honest answer than most jewelry websites give.
A moissanite ring is set with moissanite, a lab created silicon carbide gemstone chosen as a diamond alternative. A diamond ring is set with diamond, a carbon gemstone that may be mined or lab grown. Both stones are beautiful and durable enough for daily engagement ring wear. But they do not look identical. Moissanite throws stronger rainbow fire. Diamond typically offers a crisper balance of white sparkle, fire, and depth.
That difference sounds small on paper. In person, it is the thing that makes some buyers fall in love with moissanite and makes others wish they had chosen diamond.
If you are hoping moissanite will behave exactly like a diamond, slow down. Look at both stones in real light before committing. And if you already know you love the way moissanite plays with color, you are probably going to be very happy with it.
👉 Explore a princess cut moissanite halo ring to see what a well designed moissanite engagement ring actually looks like.
What Is a Moissanite Ring?
Moissanite is silicon carbide. Natural moissanite exists, but it is extraordinarily rare, first discovered in a meteor crater. Every moissanite stone in jewelry today is lab created. That does not make it “fake.” It makes it a real gemstone, grown in a lab, with its own distinct optical and physical properties.
What moissanite is not: diamond. The GIA classifies moissanite as a diamond simulant, meaning it looks similar to diamond but does not share diamond’s chemical, physical, or optical makeup. A lab grown diamond is still diamond. Moissanite is something else entirely. For a deeper breakdown, see this guide on is moissanite a diamond.
People value moissanite for three reasons: its fire (those rainbow flashes), its hardness (9.25 on the Mohs scale, making it the hardest diamond simulant available), and its price. A well cut moissanite in a quality setting can be genuinely stunning. The mistake is treating it as a cheap substitute instead of appreciating it for what it is.
What Is a Diamond Ring?
Diamond is carbon, compressed under extreme heat and pressure into the hardest natural material on earth. It scores 10 on the Mohs scale and has been the default engagement ring stone for generations.
Diamonds come in two forms now. Natural (mined) diamonds are extracted from the earth. Lab grown diamonds are created in a laboratory but have the same chemical, physical, and optical properties as mined diamonds. The GIA grades both. A diamond grading report evaluates cut, color, clarity, carat weight, proportions, polish, symmetry, and fluorescence.
This distinction matters. Lab grown diamond is diamond. Moissanite is not. Calling a moissanite ring a “moissanite diamond” is misleading, and the FTC’s jewelry guidance requires sellers to clearly disclose whether a stone is a simulant or a lab created diamond.
Moissanite Ring vs Diamond Ring at a Glance
| Factor | Moissanite Ring | Diamond Ring |
|---|---|---|
| Material | Silicon carbide | Carbon |
| Hardness (Mohs) | 9.25 | 10 |
| Fire / rainbow sparkle | Stronger, more colorful | More balanced white sparkle |
| Refractive index | 2.64 to 2.69 | 2.417 to 2.419 |
| Dispersion | 0.104 | ~0.044 |
| Refraction type | Doubly refractive | Singly refractive |
| Color grades | Near colorless standard; some warm tones possible | D (colorless) through Z (light yellow/brown) |
| Clarity grading | Not formally graded; inclusions rare in lab stones | FL through I3 on GIA scale |
| Measurement | Millimeter size or carat equivalent | Carat weight |
| Weight (density) | ~3.21 g/cm³ (lighter per size) | ~3.52 g/cm³ |
| Price (1 carat equivalent) | ~$500 to $600 | $3,000 to $5,000+ (natural) |
| Resale value | Weak | Stronger for natural; weak for lab grown |
| Best for | Sparkle lovers, budget conscious buyers, custom designs | Diamond identity, tradition, classic optics |
Sources: Brilliant Earth, Blue Nile, GIA
Color: How Moissanite and Diamond Compare
Color is one of the areas where moissanite and diamond differ in ways that matter on the finger but get glossed over in marketing.
Diamonds are graded on a precise color scale from D (completely colorless) to Z (noticeable yellow or brown tint). Each letter grade represents a measurable difference, and the GIA reports this alongside cut, clarity, and carat. Buyers can target their exact preference, whether that is an icy D/E/F stone or a warmer J/K with a hint of character.
Moissanite does not follow the same grading system. Most premium moissanite sold today is marketed as “colorless” (equivalent to the D through F range) or “near colorless” (G through I equivalent). Charles & Colvard popularized this tiered language, and most manufacturers have adopted similar labels.
Here is where it gets interesting. Early moissanite had a yellowish or greenish tint that was hard to ignore. Modern cutting and manufacturing have mostly eliminated that, but some moissanite still picks up a faint warmth or grayish tone under certain lighting. Practitioners on Reddit report that this warmth is most visible in larger stones and in warm, indoor lighting. Under cool daylight, the same stone can appear perfectly white.
The practical advice: if color sensitivity matters to you, stick with stones marketed as colorless, keep the size at or below 1.5 carat equivalent, and always ask for video in natural daylight. A slightly warm moissanite in a yellow or rose gold setting can actually look beautiful because the metal masks the warmth. In a platinum or white gold setting, any body color becomes more visible.
Clarity: What to Expect from Each Stone
Diamond clarity follows a standardized GIA scale running from Flawless (FL) down to Included (I3). Every natural diamond has some internal characteristics, whether they are crystals, feathers, or clouds. The question is whether those inclusions are visible to the naked eye. Most buyers shopping for engagement rings target the VS1 to SI1 range, where inclusions exist under magnification but are invisible in normal wear.
Moissanite does not receive formal clarity grades from the GIA. Because it is lab created, manufacturers can control the growth environment, and the result is that most moissanite reaches the market essentially “eye clean.” Needle like inclusions are technically possible in moissanite, a byproduct of the silicon carbide crystal growth process, but they are uncommon in quality stones from reputable sellers.
This is actually one of moissanite’s quiet advantages. You rarely need to worry about clarity the way you would with a natural diamond. There is no agonizing over whether an SI1 is truly eye clean or whether a VS2 is worth the premium over an SI1. What you see is generally what you get.
That said, “lab created” does not mean “perfect.” Lower quality moissanite can show haziness, whitish spots, or a milky quality that affects brilliance. Several users in r/Moissanite have flagged this with budget stones from lesser known vendors. Buying from a seller that provides close up photos or video and stands behind a return policy is the best safeguard.
Enhancement and Treatment: What Has Been Done to Your Stone
This topic rarely gets enough attention, and it should.
Most moissanite on the market today is not “treated” in the traditional gemological sense. It is synthesized, meaning grown from scratch in a lab. The color and clarity are determined during the growth process rather than altered afterward. Some manufacturers apply coatings to enhance color appearance, though this practice is controversial and not always disclosed. A coating can wear off over time, which is why it is worth asking any seller directly whether their moissanite has been coated.
Diamonds, both natural and lab grown, can receive a wider range of treatments. Natural diamonds are sometimes laser drilled to remove dark inclusions, fracture filled to improve apparent clarity, or HPHT treated to improve color. Lab grown diamonds are produced using either HPHT (high pressure, high temperature) or CVD (chemical vapor deposition) methods, and some CVD stones undergo post growth HPHT treatment to improve color. Reputable grading labs note these treatments on the report.
The key question to ask any seller: has this stone been treated or enhanced in any way? Honest sellers will tell you. If they dodge the question, shop elsewhere.
How They Look Different in Real Life
On a screen, moissanite and diamond can look almost identical. In person, the difference is specific and consistent.
Moissanite has a dispersion of 0.104, which is more than twice the dispersion of diamond at roughly 0.044. In plain terms: moissanite throws more rainbow. Under jewelry store spotlights, both stones look amazing. Step outside into sunlight and the moissanite will flash noticeably more color. Some people find that gorgeous. Others find it distracting, especially in larger stones.
GIA notes that moissanite is doubly refractive, meaning light splits into two rays inside the stone. Diamond is singly refractive. That double refraction can make certain moissanite cuts look slightly fuzzy or less crisp, particularly in step cuts or very large sizes.
The fire difference becomes especially noticeable above 1 carat equivalent. A 6.5mm round moissanite (roughly 1 carat equivalent) is usually subtle enough that most people across a dinner table will not notice. A 9mm stone? The rainbow fire announces itself.
The four lighting test
Before buying any moissanite ring, ask your seller for video in four different lighting conditions:
- Window daylight (indirect natural light)
- Direct sunlight (where fire really shows)
- Indoor office or home lighting (typical daily view)
- Dim, warm lighting (restaurant, evening atmosphere)
A studio video alone is not enough. The stone you wear every day will live in all of these environments.
Weight Difference: Why Moissanite Is Sold by Millimeter
This catches a lot of first time buyers off guard. A “1 carat equivalent” moissanite does not actually weigh 1 carat. It is sized to the same millimeter dimensions as a 1 carat diamond (6.5mm round), but it weighs approximately 10% less because silicon carbide is less dense than carbon. Moissanite’s density is about 3.21 g/cm³ compared to diamond’s 3.52 g/cm³.
In practical terms, a 6.5mm round moissanite weighs roughly 0.88 carats on a scale. That is why moissanite is properly sold by millimeter size or “diamond equivalent weight” (DEW) rather than by actual carat weight. Some sellers list both.
On the finger, this weight difference is basically unnoticeable. You will not feel a lighter stone in a metal setting. But it matters for accuracy when comparing prices per carat. If a seller advertises a “2 carat moissanite” without specifying that they mean the equivalent size, ask for the millimeter measurement and actual weight to confirm what you are getting.
Durability: Can You Wear Moissanite Every Day?
Yes. Moissanite at 9.25 Mohs is harder than sapphire, ruby, and every other common colored gemstone. It handles daily wear well. Diamond at 10 is harder, but the practical difference for most wearers is small.
Here is what matters more than the center stone: your setting. Prongs wear down. Thin bands bend. Cheap metalwork loosens over time. A moissanite in a well made 14k or 18k gold setting will outlast a diamond in a flimsy, paper thin band.
Both stones can chip if struck at the right angle with enough force. Both need prong checks. Both benefit from professional cleaning. The setting is the weak link, almost never the stone.
Avittam offers ring designs in 925 silver and 10k, 14k, and 18k gold. Silver is budget friendly for a promise ring or travel ring. For an engagement ring you plan to wear decades, gold is the more traditional and durable choice.
Price: How Much Cheaper Is Moissanite?
The savings are significant. Blue Nile estimates a 1 carat diamond at roughly $3,000 to $5,000, while a comparable size moissanite runs about $500 to $600. That is a fraction of the cost for a stone that most people cannot distinguish from diamond at arm’s length.
But the pricing conversation has shifted. Lab grown diamonds are now dramatically cheaper than they were even two years ago. As of May 2026, CaratRadar tracked 128,056 listings across 10 retailers and found an average 1 carat lab grown diamond price of $563 with a median of $491.
That changes the old math. If someone is only considering moissanite because natural diamond pricing felt too high, lab grown diamond now sits right in between. Moissanite is still the least expensive path to a large, bright center stone. But it is no longer the only affordable diamond looking option. For a full breakdown, read our moissanite vs lab grown diamonds guide.
Where moissanite buyers often reallocate their savings:
- Better metal (stepping from silver to 14k or 18k gold)
- Larger center stone
- Custom design details
- A matching wedding band
- The wedding itself, a house down payment, or travel
Practitioners on Reddit echo this constantly. One popular thread started with a shopper saying she would rather put diamond money toward a house. The replies from moissanite owners confirmed that lower financial stress and the ability to choose a bigger or custom ring were major factors in their satisfaction.
👉 See how far your budget goes with a customizable cushion cut ring in your preferred metal and size.
Moissanite vs Lab Grown Diamond vs Natural Diamond
Modern buyers are not choosing between just two options. There are three.
| Buyer Priority | Best Fit |
|---|---|
| Lowest price for maximum sparkle | Moissanite |
| Real diamond identity at lower cost | Lab grown diamond |
| Traditional rarity and heirloom story | Natural diamond |
| Maximum rainbow fire | Moissanite |
| Crisp, classic diamond optics | Lab grown or natural diamond |
| Highest scratch resistance | Diamond (either type) |
| Flexible custom design on a budget | Moissanite |
The Knot’s 2026 Real Weddings Study found that lab grown center stones accounted for 61% of engagement ring purchases among 2025 U.S. couples, a 239% increase since 2020. Moissanite and sapphires were the most popular non diamond center stones, at 20% and 23% respectively.
The takeaway: lab grown diamond has gone mainstream. If your main motivation for moissanite is budget, it is worth comparing lab grown diamond pricing before deciding. If your motivation is that you genuinely love moissanite’s fire and want design freedom, moissanite remains an excellent choice. Our full three way comparison guide breaks this decision down further.
Sustainability and Ethics
Sustainability is a growing factor for engagement ring buyers, and the picture is more nuanced than most marketing suggests.
Moissanite is lab created, which means no mining. There is no open pit excavation, no displacement of communities, and no conflict sourcing concerns. The energy required to grow moissanite in a lab is real but significantly lower than the environmental cost of mining natural diamonds. For buyers who prioritize environmental impact, moissanite is the straightforward choice.
Lab grown diamonds also avoid mining, but their production is energy intensive. Growing a diamond using the CVD or HPHT process requires sustained high temperatures and pressures. Some manufacturers use renewable energy; many do not. The carbon footprint varies significantly by producer, and independent verification remains inconsistent.
Natural diamonds carry the most complex ethical footprint. The Kimberley Process was established to prevent conflict diamond trade, but critics argue it addresses only the narrowest definition of “conflict” while ignoring broader issues like labor conditions, environmental degradation, and community displacement. Some natural diamond companies have invested heavily in traceable supply chains (De Beers’ blockchain tracking, for example), but full transparency across the industry is still incomplete.
The honest summary:
- Moissanite: Lowest environmental footprint, no mining, lab created
- Lab grown diamond: No mining, but significant energy use that varies by producer
- Natural diamond: Mining required, ethical sourcing varies widely by company and origin
No option is perfectly “clean.” But moissanite comes closest to a minimal impact choice, which is one reason it appeals to environmentally conscious buyers beyond just price.
Pros and Cons at a Glance
Moissanite Ring Pros
- Dramatically lower cost than natural diamond
- Exceptional fire and brilliance
- 9.25 Mohs hardness, suitable for daily wear
- Lab created with minimal environmental footprint
- Allows for larger stones and custom designs on a budget
- Consistent clarity with virtually no visible inclusions
Moissanite Ring Cons
- Stronger rainbow fire can look “too sparkly” for some tastes
- Double refraction can create a slightly fuzzy look in step cuts
- No standardized grading system like the GIA 4Cs
- Weak resale value
- Can pick up warm or grayish tones in larger sizes
- Some people feel uncomfortable if others assume it is diamond
Diamond Ring Pros
- Crisp, balanced sparkle with classic white brilliance
- 10 Mohs, the hardest gemstone available
- Standardized GIA grading for transparent quality comparison
- Stronger resale value (natural diamonds especially)
- Deep cultural and emotional associations with commitment
- Lab grown options now available at much lower prices
Diamond Ring Cons
- Natural diamonds carry significant environmental and ethical concerns
- Natural diamond pricing remains high relative to alternatives
- Lab grown diamond resale value is declining rapidly
- Quality varies enormously, requiring education on the 4Cs
- Treated stones (fracture filled, laser drilled) can be misrepresented
Meaning and Symbolism
Diamonds have represented commitment and permanence for generations. The association is deeply embedded in Western culture, amplified by De Beers’ “A Diamond is Forever” campaign that launched in 1947. For many couples, a diamond engagement ring carries weight that goes beyond the physical stone. It connects to family tradition, societal expectation, and a sense of enduring value.
Moissanite’s symbolism is newer and more personal. It does not carry the same inherited cultural meaning, which some buyers see as a drawback and others see as freedom. Choosing moissanite can represent practicality, environmental values, or simply the belief that a relationship’s meaning does not depend on the mineral in the ring.
There is a generational shift happening here. Younger buyers, particularly those born after 1990, are more likely to assign personal meaning to their ring choice rather than defaulting to tradition. Practitioners on Reddit frequently describe choosing moissanite as an intentional statement: they wanted their money to go toward shared experiences (travel, homeownership) rather than a more expensive stone.
Neither stone is inherently more meaningful. A ring’s symbolism comes from the relationship it represents, not the gemological certificate. But it is worth having an honest conversation with your partner. Some people genuinely care about having a diamond. Others do not. Both feelings are valid, and discovering the mismatch after the proposal is not ideal.
Which Cuts Look Most Diamond Like?
This is where the moissanite ring vs diamond ring comparison gets practical. Not all cuts perform the same in moissanite.
Round Brilliant
Round is the safest choice for buyers who want a classic engagement look. Hearts and arrows cutting controls the fire and makes the stone look more balanced. Reddit users in the r/Moissanite community repeatedly recommend round brilliant at 8mm (roughly 2 carat equivalent) and below as the most “passable” moissanite shape.
A round moissanite is the least risky choice if you want sparkle without fighting the stone’s nature.
Emerald and Asscher
Step cuts do not throw the same splintery brilliance as brilliant cuts. That calmer, more architectural look works beautifully in moissanite because it reduces the rainbow fire that some buyers find excessive. Buyers and commenters in moissanite forums often mention emerald and Asscher cuts as some of the most convincing diamond like options.
Step cuts show cutting quality and clarity. A cheap step cut stone can look flat. A well cut one looks elegant and deliberate. Take a look at this Asscher moissanite ring for an example of how a step cut can feel refined.
Cushion and Oval
These shapes show more personality in moissanite. The rainbow fire is easier to spot, especially in larger stones. Some buyers love the warmth and drama. Others later wish they had gone with diamond for these shapes.
In r/EngagementRings discussions, some owners mentioned regret specifically with oval and cushion moissanites looking waxy or flat under certain lighting. If you want a cushion or oval moissanite, ask for videos in natural light, not just studio shots.
Crushed Ice
Crushed ice moissanite is marketed as “more diamond like” in fancy shapes because it reduces obvious facet flashes. Community reaction is mixed. Several Reddit users say crushed ice can look hazy or milky in moissanite because of double refraction.
Crushed ice is not automatically better. It can be pretty, but it is the cut most likely to disappoint buyers who expect crisp diamond depth. Do not let the name do the selling.
Antique Cuts
Old mine and old European style cuts work beautifully in moissanite. Larger, chunkier facets give a romantic look that does not need to mimic a modern diamond. Antique cuts make moissanite feel intentional, like a thoughtful design choice rather than an attempt to pass as something else. For more on this style, see our old mine cut glossary.
Browse this old mine cut cushion ring to see that vintage character in action.
Black Moissanite
Black moissanite is its own category. It is not trying to look like a white diamond. It works for gothic, alternative, minimalist, or non traditional engagement rings. GIA notes it retains moissanite’s 9.25 Mohs hardness, making it plenty durable for daily wear. If the traditional diamond look is not your style, a black moissanite ring can be striking.
Will People Know It Is Moissanite?
Honestly? Most people do not inspect engagement rings closely. Your coworker across the conference table is not going to identify your stone. A jeweler, a photographer who shoots rings, or someone who owns moissanite might notice.
The giveaway is not that moissanite looks cheap. It does not. The giveaway is that it throws more rainbow than diamond. Larger stones and certain fancy shapes make this more obvious.
Here is a useful gut check. If you would happily tell someone, “It’s moissanite, I chose it because I love the sparkle,” the stone is probably a good fit. If you would feel a pang of disappointment every time someone assumes it is a diamond and then finds out it is not, you might be happier with a lab grown diamond.
One commenter on Reddit put it simply: if you want moissanite to be a diamond dupe, you may be disappointed. If you enjoy moissanite’s own look, it can be perfect.
The thermal tester note
You may have heard that moissanite “passes” a diamond tester. That is partly true and partly misleading. The FTC warns that older thermal conductivity testers designed to separate diamond from cubic zirconia may falsely register moissanite as diamond. Newer testers that measure electrical conductivity can usually distinguish between the two. This is worth knowing if you are buying from any seller: ask for clear written identification of the stone, and do not rely on a random tester result as proof.
Care and Cleaning
Moissanite itself does not degrade, discolor, or go cloudy over time. But a common real world complaint among owners is “oil slick,” a filmy, dull appearance caused by buildup from lotions, hand sanitizer, hair products, cooking oils, and daily grime. Practitioners on Reddit discuss this frequently and recommend regular cleaning.
Basic cleaning routine:
- Warm water, a drop of mild dish soap, and a soft toothbrush
- Gently scrub under and around the stone where oils collect
- Rinse thoroughly and pat dry
When to remove your ring:
- Heavy cleaning with harsh chemicals
- Swimming (chlorine can affect metal over time)
- Intense gym workouts or gardening
- Applying heavy lotions or sunscreen
Professional cleaning helps with pavé stones and hard to reach areas around prongs. This advice applies equally to diamond rings. Any ring worn daily needs regular attention.
Will You Regret Moissanite?
This is the question most jewelry websites dance around. So here is the honest answer based on what buyers actually report.
Most moissanite regret is not about the stone failing. It is about expectation mismatch. People who bought moissanite because they wanted moissanite tend to stay happy years later. People who bought moissanite hoping it would secretly feel exactly like a diamond are the ones who end up second guessing the decision.
In regret threads on r/EngagementRings, complaints center on appearance: too much rainbow, not enough depth, a waxy quality in certain lighting. The durability holds up. The sparkle holds up. What does not always hold up is the feeling, and that feeling comes from whether the buyer wanted this stone or just settled for it.
Most moissanite regret starts when someone wanted a diamond feeling at a moissanite price. That is where the trouble lives.
Which Ring Should You Choose?
Choose a moissanite ring if you love rainbow sparkle, want a larger center stone without a diamond budget, care more about design and setting than diamond identity, and would proudly tell people it is moissanite.
Choose a diamond ring if you specifically want a diamond, prefer crisp white sparkle over rainbow fire, value traditional grading and heirloom symbolism, or would feel uncomfortable explaining that your ring is not diamond.
Choose a lab grown diamond if you want real diamond optics and identity but not mined diamond pricing, and you were only considering moissanite because natural diamond felt too expensive.
A well cut moissanite in a good setting will look better than a bad diamond in a flimsy setting. And a well cut diamond will have a depth and character that moissanite cannot perfectly replicate. Neither choice is wrong. The wrong choice is buying one while wishing it were the other.
A beautiful ring is one you enjoy wearing every day, not one that checks someone else’s box.
👉 Browse Avittam’s engagement ring collection to find moissanite designs in 925 silver through 18k gold, with options for custom orders and free worldwide shipping.
FAQs
Is moissanite a diamond?
No. Moissanite is silicon carbide. Diamond is carbon. They are different gemstones with different optical and physical properties. The GIA classifies moissanite as a diamond simulant, not a lab grown diamond.
Is moissanite fake?
Moissanite is a real gemstone. It is only “fake” if someone sells it while claiming it is a diamond. Buying moissanite as moissanite is buying a genuine, lab created stone.
Can people tell moissanite from diamond?
Sometimes. The average person usually cannot tell from across a room, especially with a moderate size, well cut stone. Side by side in sunlight, or in larger sizes, moissanite’s stronger rainbow fire and double refraction can give it away.
Does moissanite get cloudy?
The stone itself does not become cloudy over time. However, surface buildup from lotions, oils, hand sanitizer, and daily products can make it look dull or filmy until cleaned. Regular cleaning solves this.
What moissanite cut looks most like diamond?
Round brilliant (especially hearts and arrows) and step cuts like emerald and Asscher tend to look the most diamond like. Crushed ice cuts are often marketed as diamond like but can look hazy. Antique cuts do not try to mimic diamond and often look the most intentional.
Is moissanite good for an engagement ring?
Yes. At 9.25 on the Mohs scale, moissanite is durable enough for daily wear. The bigger question is whether the wearer genuinely likes moissanite’s look or is settling because of price.
Why is moissanite so much cheaper than diamond?
Moissanite is lab created in large quantities, while natural diamonds are mined and supply controlled. The material costs, rarity, and market positioning are completely different. Lab grown diamonds have also dropped in price significantly, narrowing the gap.
Does moissanite have resale value?
Minimal. Moissanite rings are best purchased for wear and beauty, not as financial investments. Natural diamonds retain more value in resale, though even diamond resale is rarely close to retail price.
Is moissanite more sustainable than diamond?
Moissanite has the lowest environmental footprint of the three options because it is lab created without mining. Lab grown diamonds avoid mining but require significant energy. Natural diamonds carry the largest environmental cost due to extraction. No option is impact free, but moissanite comes closest to minimal.
Does moissanite weigh the same as diamond?
No. Moissanite is about 10% lighter than diamond for the same size. A 6.5mm round moissanite (1 carat diamond equivalent) actually weighs approximately 0.88 carats. This is why moissanite is properly sold by millimeter size or “diamond equivalent weight” rather than actual carat weight.
