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Short answer: Natural diamonds, lab grown diamonds and moissanite all look beautiful, but they differ in origin, sparkle and price. Natural and lab grown diamonds are both real diamonds (pure carbon, 10 on the Mohs scale) and look identical; lab grown costs far less. Moissanite is a different gemstone (silicon carbide, 9.25 on the Mohs scale) with more rainbow fire and the lowest price. Choose natural for tradition and rarity, lab grown for a real diamond at great value, and moissanite for maximum size and sparkle on a budget.
This is the question our customers ask more than any other. All three stones can make a stunning engagement ring or pair of earrings, and all three will last a lifetime. The right choice depends on what matters most to you: rarity, the word "diamond" on the certificate, a specific look, or the size you can get for your budget.
Below we compare the three side by side, explain how each one is made, show how they differ in sparkle, hardness, grading and long-term value, and finish with a simple way to decide.
Natural vs Lab Grown vs Moissanite at a Glance
| Feature | Natural diamond | Lab grown diamond | Moissanite |
|---|---|---|---|
| Material | Carbon | Carbon | Silicon carbide |
| Real diamond? | Yes | Yes | No, a different gem |
| Mohs hardness | 10 | 10 | 9.25 |
| Refractive index | About 2.42 | About 2.42 | About 2.65 |
| Sparkle | Classic white brilliance and fire | Identical to natural | More rainbow fire |
| Grading | GIA, IGI | IGI, GIA | Brand or lab reports |
| Origin | Formed deep in the earth over billions of years | Grown in weeks (CVD or HPHT) | Created in a lab |
| Price (same look) | Highest | Much lower | Lowest |
| Resale | Some, well below retail | Low | Very low |
The short version: two of these are diamonds and one is not. The two diamonds differ only in where they formed. Moissanite differs in its chemistry, its optics and its price.
What Each Stone Actually Is
Natural diamond
A natural diamond is crystallized carbon that formed under intense heat and pressure deep inside the earth, then was carried toward the surface by volcanic activity and mined. Every natural diamond is millions to billions of years old. That age and rarity is the main thing you pay for.
Lab grown diamond
A lab grown diamond is also crystallized carbon. It has the same chemical composition, crystal structure, hardness and optical properties as a mined diamond. The only difference is origin: it was grown above ground in weeks rather than formed underground over geological time. Gemological labs such as IGI and GIA grade lab diamonds using the same 4Cs (cut, color, clarity and carat) and note on the report that the stone is laboratory grown.
Moissanite
Moissanite is silicon carbide, a completely different mineral. It was first discovered in tiny amounts in a meteorite crater, and natural moissanite is far too rare to use in jewelry, so every moissanite you can buy is created in a lab. It is not a diamond, not a "fake diamond" and not a "moissanite". It is its own gemstone, chosen for its brilliance, hardness and value.
How lab diamonds and moissanite are made
Lab grown diamonds are produced by one of two methods:
- CVD (chemical vapor deposition): a thin diamond "seed" plate sits in a chamber filled with carbon-rich gas. The gas is energized and carbon atoms settle onto the seed, building the crystal layer by layer.
- HPHT (high pressure, high temperature): a press recreates the crushing pressure and heat found deep in the earth, turning carbon into diamond around a small seed.
Both methods produce real diamonds. Neither is "better" by default; a well-grown and well-cut stone from either method can be excellent. What matters is the final grade on the certificate and how the stone is cut.
Moissanite is made by a different process that crystallizes silicon carbide at high temperatures. The rough crystal is then cut and polished like any other gemstone. Because it is a single, consistent material made under controlled conditions, colorless moissanite is widely available in almost any shape and size.
Which Looks Best?
Natural and lab grown diamonds are visually identical, even to experienced jewelers without lab equipment. Telling them apart requires advanced instruments that study growth patterns and trace elements.
Moissanite looks very close to diamond at a glance, but it behaves differently in light:
- More fire: moissanite splits light into rainbow colors much more strongly than diamond. In sunlight or under spotlights you see bright flashes of color, which some people love and others find less "diamond-like".
- Higher refractive index: at about 2.65 versus about 2.42 for diamond, moissanite bends light more, giving it intense brilliance.
- Double refraction: moissanite is doubly refractive, so when viewed through the side at certain angles the back facets can look slightly doubled. Good cutters orient the stone to minimize this when viewed from the top.
- Size matters: the extra fire is most noticeable in larger stones, roughly 2 carats and up. In small accent stones and earrings, the difference is very hard to see.
Diamonds, natural or lab, show a balanced mix of white light (brilliance) and colored flashes (fire). If you want the "classic diamond" look, either type of diamond delivers it. If you want maximum sparkle, moissanite delivers more of it.
Shown: Pear Cut Halo Moissanite Solitaire Ring
Color, Clarity and Grading
Both natural and lab grown diamonds are graded on the GIA color scale from D (colorless) downward, and on clarity from Flawless through Included. You can choose any combination of grades in either type, though lab grown makes high grades like D to F color and VVS to VS clarity far more affordable.
Moissanite is graded differently. There is no universal moissanite standard, so color and clarity are usually described by the maker or by a lab report on a diamond-like scale. Most jewelry moissanite today is colorless or near colorless and very clean. In large sizes and under some lighting, a slight warm or gray tint can be visible compared with a D-color diamond.
| Grading topic | Lab or natural diamond | Moissanite |
|---|---|---|
| Main graders | IGI, GIA | Maker or lab report |
| Color scale | D to Z | Described on a D-to-Z style scale |
| Clarity scale | FL to I3 | Usually very clean |
| Laser inscription | Common on graded stones | Sometimes |
| What to check | Cut grade, color, clarity, carat | Color description, cut quality |
Tip: With any diamond, ask for the certificate number and check that the details (shape, carat weight, measurements and grades) match the stone you are buying. Many of our lab grown diamonds come with IGI certificates.
Durability for Everyday Wear
All three stones are excellent for everyday jewelry, including engagement rings worn every day.
- Diamonds (natural and lab): 10 on the Mohs scale, the hardest natural material. They resist scratching from everything except other diamonds.
- Moissanite: 9.25 on the Mohs scale, harder than sapphire and ruby. It holds its polish and sparkle for decades.
Hardness is not the same as toughness. Any gemstone, including a diamond, can chip if it takes a hard knock on a sharp edge or point. A secure setting, sensible care and removing your ring for heavy work protect all three equally.
Which Is Best Value?
- Lab grown: a real diamond for a fraction of natural pricing. You can usually choose a larger carat or higher grades for the same budget.
- Moissanite: the biggest size for the smallest budget. A large, eye-clean moissanite costs a small fraction of a diamond that looks the same size.
- Natural: highest cost, valued for rarity and tradition.
Value also depends on what you plan to do with the stone. If you might resell it, none of the three gives back what you paid; natural diamonds hold some value but sell well below retail, and lab grown diamonds and moissanite have little resale value. If you plan to wear the piece for life, the money saved with lab grown or moissanite can go toward a better setting, a matching wedding band or simply staying on budget.
How to Tell Them Apart
This is a common worry, so here is what is realistic:
- By eye: nobody can tell a natural diamond from a lab grown diamond by looking. Moissanite can sometimes be spotted by its extra rainbow fire, especially in large stones and bright sunlight.
- With a basic diamond tester: many simple testers measure heat conduction. Lab grown diamonds test as diamond. Moissanite also conducts heat well, so it can fool these testers; dedicated moissanite testers that check electrical conductivity are used to separate them.
- With lab equipment: gemological labs use specialized instruments to identify lab grown diamonds and to confirm moissanite. This is why the certificate matters.
The honest approach is simple: buy from a seller who clearly labels what each stone is. At Ivevar every product is described as lab grown diamond or moissanite.
Shop the styles in this guide
Who Should Choose Each?
Natural diamond
Buyers who value geological rarity and tradition above price, or who specifically want a stone that formed in the earth.
Lab grown diamond
Buyers who want a real diamond with the same look and hardness as mined, with a larger size or higher grades for their budget. Browse our lab diamond engagement rings to see what is possible.
Moissanite
Buyers who love extra fire and want the most size per rupee, or who want a big statement ring without a big statement price. See our moissanite engagement rings.
Settings, Care and Ethics
Choosing a setting and metal
All three stones work in any setting style: solitaire, halo, pave, three stone or bezel. A few practical points help:
- Color pairing: colorless stones look brightest in white gold. Yellow and rose gold add warmth and can make a slightly warm stone look whiter by comparison.
- Prong count: four prongs show more of the stone; six prongs add security and make a round stone look rounder.
- Pointed shapes: pear, marquise and princess stones need a V-prong or bezel on each point, whatever the stone type.
- Accent stones: a moissanite center with lab diamond accents, or the other way round, is perfectly fine. In small accent sizes the stones look almost the same.
We make settings in 10K, 14K and 18K gold. Lower karat gold is harder and more scratch resistant; higher karat gold has a richer color and more gold content.
Caring for each stone
Care is almost identical for all three. Diamonds and moissanite both attract skin oils and lotion, which dull their sparkle. Soak the piece in warm water with a drop of mild dish soap, brush gently behind the stone with a soft toothbrush, rinse and dry with a lint-free cloth. Do this every week or two for a ring you wear daily.
Take rings off for the gym, gardening, cleaning with harsh chemicals and swimming in chlorinated pools. Store pieces separately so harder stones do not scratch softer metals or other jewelry. Every six to twelve months, ask a jeweler to check that the prongs are still tight.
Ethics and origin
Many buyers choose lab grown diamonds or moissanite because their origin is fully traceable: they are made in controlled facilities, with no mining involved. Natural diamonds can also be responsibly sourced, and the industry uses the Kimberley Process to keep conflict diamonds out of the supply chain, but tracing a specific mined stone back to its source is harder.
If origin is a key reason for your choice, ask any seller exactly what they can document about the stone you are buying.
A Simple Way to Decide
Ask yourself these questions in order:
- Does it have to be a diamond? If yes, choose natural or lab grown. If no, moissanite is a strong option.
- Does origin matter to you? If you specifically want a mined stone, choose natural. If not, lab grown gives the same diamond for less.
- How do you feel about extra rainbow sparkle? If you love it, moissanite. If you prefer a classic white-and-fire balance, a diamond.
- What size do you want? The larger the stone, the bigger the price difference between the three.
Tip: If you are unsure about fire versus brilliance, look at videos of each stone in daylight and indoor light. You can also book a virtual appointment with us to see stones on camera before you decide.
Shop at Ivevar
We offer lab grown diamonds and moissanite, handcrafted in our Surat workshop and clearly labeled. Settings are available in 10K, 14K and 18K gold, and we also make custom pieces to your design. Every piece ships free worldwide, with 30-day easy returns. See our comparison page, loose lab diamonds and moissanite rings, or explore all moissanite.
Shop Pear Lab Diamonds and Moissanite
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Frequently Asked Questions
Is a lab grown diamond a real diamond?
Yes. It is chemically, physically and optically the same as a natural diamond. Only its origin is different.
Is moissanite a diamond?
No. Moissanite is silicon carbide, a different gemstone that looks similar to diamond and has more rainbow fire.
Which is cheapest?
Moissanite is the most affordable, then lab grown diamond, then natural diamond, comparing stones that look the same size.
Can people tell them apart?
Nobody can tell natural from lab grown diamond by eye. Moissanite can sometimes be recognized by its extra fire, mostly in larger stones.
Which lasts longest?
All three last a lifetime with normal care. Diamonds are 10 on the Mohs scale and moissanite is 9.25.
Do lab grown diamonds come with certificates?
Yes, graded lab diamonds come with reports from labs such as IGI or GIA. Many of our lab grown diamonds have IGI certificates.
Will moissanite change color or get cloudy?
No. Moissanite's color is stable. Like any stone, it can look dull when dirty, and a gentle clean restores its sparkle.
Which is best for an engagement ring?
All three work well. Choose by priority: rarity (natural), real diamond at better value (lab grown), or size and sparkle on a budget (moissanite).
Can I mix moissanite and lab grown diamonds in one piece?
Yes. A common choice is a moissanite center stone with small lab diamond accents, or a lab diamond center with moissanite side stones. In small sizes the two look almost identical, so the piece looks consistent while staying on budget.
Does a lab grown diamond test as a diamond?
Yes. Because it is real diamond, a lab grown stone passes standard diamond testers. Only advanced lab instruments can identify that it was grown rather than mined, which is why graded lab diamonds are clearly marked as laboratory grown on their reports.
The Bottom Line
Natural for rarity, lab grown for real-diamond value, moissanite for maximum sparkle per rupee. All three make beautiful, durable jewelry, so pick the one that matches your priorities and your budget.
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Author Bio
Aumsri Pradhan
Founder, Ivevar Luxury
Aumsri Pradhan is the founder of Ivevar Luxury, a Surat-based fine jewelry brand that designs and handcrafts lab grown diamond and moissanite jewelry in its own workshop. She leads the brand's design and customer experience, from engagement rings and bridal sets to custom pieces made to each client's story. Through the Ivevar blog, she shares practical guidance on lab grown diamonds, moissanite, diamond grading and ring design to help buyers choose with confidence.
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