Moissanite vs Diamond – Which is Better? (Video Comparison)

diamond comparison under magnification

Out of the many simulants available in the market, moissanite is perhaps the most popular alternative to buying a diamond. In this write up, we will take a detailed look at the similarities and differences between moissanite and diamond.

We will also answer commonly asked questions like: “Is one better than the other?” and “How do they look like in real life?” with video comparisons and real-life photographs.

Hopefully, this gives you a better understanding of what diamonds and moissanite really are and which might best suit your needs.

Let’s dive in…

First of All, What is Moissanite?

In 1893, moissanite (silicon carbide) was first discovered in Arizona by Dr. Henry Moissan who later went on to win a Nobel prize in chemistry. It is extremely rare in nature and exist in colorless, green and yellow hues.

One of the reasons behind moissanite’s popularity in jewelry is due to its physical and chemical properties. Moissanite is transparent and extremely hard (scores 9.25 on the Mohs scale). As a result, they can be easily faceted and polished to good luster.

Moissannite is also doubly refractive and has a high index of refraction which gives them a distinctive look. In layman’s terms, when light passes through moissanite, it gets bent more and this results in more light dispersion (fire).

Today, nearly all the moissanite used in jewelry are artificially synthesized in laboratories. Most notably, one of the largest producers in the world is a company called Charles & Colvard and they were the first to patent a process of mass-producing moissanite.

half carat moissanite review comparison

0.50ct moissanite I purchased from Charles & Colvard

Next, What is Diamond?

I’m pretty sure most people are familiar with diamonds and they need no introduction. After all, diamonds are a girl’s best friend, right? Here’s an interesting fact; did you know that diamond is made up of carbon which is the same material found in pencil leads.

The key difference lies in diamond’s molecular structure in which every carbon atom is covalently bonded to 4 other carbon atoms. This gives diamond its superior strength and makes them the hardest object on Earth.

On the Moh’s scale, diamond has the highest possible score of 10. To provide you with some perspective, it is about four times harder than moissanite which scores a 9.25 on the same scale.

In nature, diamonds are formed deep in the Earth’s mantle over billions of years before finding their way to the surface via volcanic activities. However, technological advancements have now enabled man to create diamonds in the laboratories in just a short span of weeks.

For a comprehensive understanding of diamonds and the things to look out for, check out the various sections of Beyond4cs.com about the 4Cs and consumer’s guide.

Visual Differences Between Diamond vs Moissanite

As a consumer shopping for a piece of jewelry, the differences in material properties between diamond and moissanite may not be the things you are most concerned about. In fact, the questions that readers frequently ask often relate to differences in visual appearances and practicality.

Appearance – To the untrained eye, a moissanite can look like a diamond as they both possess some similar traits. However, due to moissanite’s refractive optical characteristics, their polished facet structure is completely different from the diamond’s 57 facets round brilliant cut.

diamond vs moissanite - how it looks like

Moissanite – Poor light return and patterning

moissanite vs diamonds how it looks like

Diamond – Crisp, well defined patterning


Most moissanite stones are cut with shallow crowns and deep proportions. While this configuration boosts the gemstone’s fire, it compromises the brightness of the stone; resulting in unappealing dark, dead and glassy areas within the stone.

Keep a mental note of this and you will be able to see this effect clearly in the video comparison against a well cut diamond later.


Color – Diamonds can exist in a wide spectrum of colors from the hues found in a rainbow and in varying intensity tones. Most diamonds used in jewelry are white diamonds and are graded in the D-Z color range.

Moissanite is widely available in the near colorless ranges (G-J) and in a limited number of green/yellow tints. Some higher grade moissanite made using enhancement technology can achieve a similar D-F colorless appearance.


Fluorescence – A third of naturally mined diamonds exhibit blue fluorescence which is a cool feature I personally enjoy seeing and showing off to friends. On the other hand, synthetic moisannite doesn’t exhibit fluorescence due to their chemical composition.

different grades of diamond fluorescence


Both moissanite and diamond can be used to make beautiful engagement rings when chosen well. With diamonds, you can cherry pick one that’s truly well cut for sparkle with some due diligence.

On the other hand, you are pretty much at the mercy of the jeweler when buying moissanite because of the lack of tangible data (due to low costs) and the fact that most moissanite aren’t cut well to begin with.

Moissanite vs Diamond Side by Side Video Comparison

Moissanite is often touted as a low cost alternative to diamond with a comparable level of brilliance/sparkle. Well, that’s not true once you look at facts and understand the science behind light performance.

Don’t get me wrong here.

There’s nothing intrinsically wrong with the material properties of moissanite. They can be beautiful IF they are cut well. And that’s the crux of the problem. Most moisannite aren’t well cut because it takes a skilled craftsman and time (these cost money!) to polish them.

Due to economical reasons and the low selling price of moissanite stones, would you expect a master craftsman to have worked on a polished moissanite that costs less than $400? The cold hard fact is, most moissanite are cut terribly (including the one I bought).

Watch the following video depicting a side by side comparison between diamond versus moissanite in different lighting environments below…

 

 

There’s something else I want to highlight here as well. Due to moissanite’s higher refractive index, they tend to display more fire (rainbow effect) and this is noticeable even in diffused natural lighting.

oily hazy plastic fake moissanite diamond appearance

Moissanite under magnification with oily appearance.

While some people love the color display of light, there are many others who think this makes the stone look “fake” and “artificial”. The phenomenon is more pronounced in larger carat size stones where they display an “oily like” surface.

Moissanite vs Diamond Price Comparison

Being a simulant, moissanite is obviously less expensive than the real thing. Let’s do a cost comparison between diamond and moissanite to give you an idea of how much they cost. In general, you can expect to pay less than a tenth of a diamond’s price for a loose moissanite.

review of forever one near colorless moissanite vsdiamond cost

moissanite next to diamond

While moissanite may be relatively cheaper than diamond, I personally feel there are much better alternatives. Compared to other types of simulants, moissanite is grossly expensive and the optical characteristics are nowhere near a diamond’s.

In fact, if you were going the route of a non-diamond engagement ring, cubic zirconia is going to be a much better option due to its lower cost and better appearance over moissanite.

Feel free to perform your own price comparisons to get a better idea of how much different gemstones cost. The easiest way to do this is to use prices at James Allen or Brilliant Earth as a benchmark.

Where to Buy Moissanite Rings or Diamond Jewelry?

I’m not a fan of moissanite but that doesn’t mean you have to agree with me. Having been in the trade and an avid gemstone collector, I have raked up alot of experience with different vendors and made a number of purchases.

When it comes to moissanite engagement rings, one of the best places to buy them is at Brilliant Earth. They have a range of moissanite in different carat ranges and sizes. More importantly, the settings they make are well crafted and beautiful.

moissanite engagement ring review brilliant earth

Click here to browse Brilliant Earth’s collection of moissanite engagement rings…

As for the best places to buy diamond jewelry, we had already written a comprehensive article here that describes different vendors in the business and the various products they specialize in.

Diamond vs Mosannite – Which is For You?

Ultimately, the choice between diamond versus mossanite boils down to personal preferences. If you are having trouble deciding, think about what you need the stone for. How important is it to have a diamond?

Can you do without it? Do you need the symbolic meaning of a diamond for a proposal ring or an anniversary gift?

Personally, I feel that moissanite is overrated and is a gemstone that pleases no one. As an alternative to diamond, it is extremely expensive and both its optical/physical properties doesn’t come close to being a diamond.

can you tell moissanite from diamond

Here’s the thing.

Jewelers and businesses who peddle moissanite with vested interest often market them to be a “superior” alternative over diamonds. I call bullshit on such claims especially when it comes to optical performance.

If you are looking for a simulant that better resembles a diamond, cubic zirconium (CZ) is a much better choice over moissanite. Not only is it significantly cheaper and generally better cut, it is also easily available in departmental stores.

So, for people who are shopping for a diamond alternative, my advice is to ditch moissanite and buy CZ instead. With that, we’ve come to the end of the article. Now, I want to hear from you.

Would you still opt for buying mossanite over diamond? Or would you prefer other types of gemstones? Do leave a comment below and share your thoughts!

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18 Comments

  1. Norma C.-
    July 7, 2017 at 6:03 pm

    Besides the oily display, can you tell a moissanite vs diamond side by side apart from each other?

  2. Paul Gian-
    July 8, 2017 at 9:47 pm

    The easiest and surest way is to use a loupe. If you are asking whether you can tell the difference of a moissanite from diamond using the naked eyes, then you would have to look out for their different faceting pattern.

    If you are observant, you probably realise the thinner arrows compared to the diamond’s nicely shaped arrow shafts. This is due to longer lower girdle facets and it gives moissanite a scintillation patterning with smaller flashes of light.

    The caveat here is that inexperienced people would not know the things to be aware of.

  3. Kaitlin-
    August 12, 2017 at 7:16 pm

    If the moissanite diamond was so ugly, why did you buy it? Couldn’t you buy one that is well cut since you are the expert here?

  4. Paul Gian-
    August 14, 2017 at 10:12 pm

    Good question and that goes to show you are actually thinking and being critical of what you read.

    With diamonds, you actually get to cherry pick within inventories and can make a purchase based on the exact specifications you want. It isn’t the same case for moissanite loose gemstones. There’s no such inventory for you to cherry pick from. What you do is to place an order based on carat weight and estimated color/clarity properties.

    And then you pray for the best (not that it helps in anyway though because most of them are garbage tier cut quality). As a gemstone collector, I bought them for collection and for study purposes. As far as I know, there’s no vendor in the market that cares about cut quality when it comes to moissanite. Much of it is highly commercialized and peddled with marketing gimmicks claiming they are a “better” alternative to diamond.

    I stand by my opinion that CZ is a better buy if you don’t want a diamond ring.

  5. Melissa S.-
    October 12, 2017 at 9:17 pm

    I was wondering why a larger carat size moisssanite diamond looks fake when I saw a couple of rings here at a local jewelry store. The smaller one looked closer to a diamond while the larger one didn’t. Your explanation on the oil appearance was exactly what I saw.

  6. Paul Gian-
    October 13, 2017 at 12:13 am

    Yep. When facets are larger, the dispersion of light is easier to be seen with the naked eye. This wanton dispersion is what causes the larger size gemstones to look like a fake diamond.

    By the way, it’s confusing to lump the terms moissanite diamond together. They should be separate terms as they refer to different things.

  7. Donna White-
    January 4, 2018 at 3:11 pm

    Have you reviewed a forever brilliant moissanite vs diamond before? What do you think about the brand? I would love to hear your thoughts.

  8. Paul Gian-
    January 6, 2018 at 2:36 am

    Yep. I’ve reviewed them before. The Forever brilliant Moissanite is a premium line of gemstones from Charles and Colvard. It’s the one you see in the video.

  9. Just a Guy-
    March 18, 2018 at 2:07 pm

    I heard about the Rapaport price chart that is used by jewelers. Is there a similar moissanite diamond price list that is used?

  10. Paul Gian-
    March 19, 2018 at 2:57 am

    No there isn’t. There simply isn’t too many segregations of categories with Moissanite to warrant such charts. Also, they are far too low valued for people to create something like this.

  11. Noe Johnson-
    May 20, 2018 at 6:19 am

    What a biased article! Moissanite look great and are much more ethical then the blood diamonds you are selling. Shame on you. Did you know how much environmental damage is caused because of mining?

  12. Paul Gian-
    May 20, 2018 at 10:16 am

    You are standing on weak ground with lambasting arguments of moissanite as a better looking, conflict-free, glimmery alternative to diamond. While proponents of moisannite may claim that they don’t have “ethical” or “environmental” issues that plague diamonds as they are made in the lab, the same benefits could be said for lab created diamonds as well.

    If you are so concerned about the environment, don’t even buy any jewelry to begin with. It’s hypocritical as their fabrication all require resources whether you buy a moissanite or a diamond. Heck, I could even argue that the electrical devices you own (i.e. lithium batteries) cause environmental damage.

    For the record, I’m neither against nor for consumers buying diamonds. If someone doesn’t want to buy a diamond, so be it. It doesn’t affect me. This site is created for to help people come to an educated decision on what they want to buy.

    I have made my stand clearly that consumers would be far better off with CZ over moissanite and that’s the best alternative if you are shopping for a non-diamond engagement ring.

  13. Sylvia-
    June 4, 2018 at 12:51 am

    Oh, what a load of crap… I’m sorry, the only thing that you have convinced me of by writing this BS is that you are grossly biased towards diamonds…you are peddling and perpetuating the ugly DeBeers marketing strategy that has brainwashed our society towards diamonds. You really think that at $399 part carat is grisly overpriced and a diamond at $6,00 is not? I’d choose moissanite over diamond or CZ any day. And for you to say that CZ is a better option, you truly know nothing about what CZ is…stop regurgitating the crap you’ve red and selling it to those who don’t know any better.

  14. Paul Gian-
    June 4, 2018 at 2:47 am

    Well, all you need to do is to look at the gemstones and underlying performance. If you want a gemstone that looks and copies the appearance of a diamond, the closest and cheapest alternative is CZ. In case you don’t know the market (and your comments clearly shows how ignorant you are), a decent quality CZ costs about $1/carat.

    Moissanite doesn’t look like diamond at all. That’s a fact. Look at the scientific data and use your eyes. And as a disclosure, I own and buy all 3 types gemstones. I have no bias for diamonds or anything against CZ. I have no love for De Beers as well.

    You probably want to re-read the entire article. I will reiterate, for people who are looking for alternatives, moissanite is pricey and doesn’t have the performance compared to CZ.

  15. fiz-
    June 16, 2018 at 6:02 pm

    What about fancy cuts like Emerald?

    Both diamonds and moissanite wont exhibit the same kind of fire/scintillation because of the cut. Would it then warrant a moissanite consideration?

    Mostly because I’ve heard that CZ gets cloudy over time and also that CZ breaks much easier.

  16. Paul Gian-
    June 17, 2018 at 10:23 am

    Low quality CZ from the past decade does turn cloudy overtime compared to those manufactured now. That said, even if your CZ does turn cloudy, you can simply throw it away and get a new one. The cost is really negligible compared to buying a moissanite or diamond. And CZ doesn’t “break” that easily contrary to what you think. On the hardness scale, CZ is a 9.

  17. Odin-
    September 14, 2018 at 8:35 pm

    Hi Paul, do you have a similar article comparing CZ vs diamond? Wondering why you say that a CZ is most comparable to a diamond. Also wondering where you’d recommend for buying a quality CZ ring? Thanks!

  18. Paul Gian-
    September 17, 2018 at 12:01 pm

    The refractive index and appearance of a CZ is most alike to a diamond. Other diamond imitations are not only more expensive but also look completely different.

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