4 carat moissanite ring price

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How much does a 4 carat diamond cost?

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Price of a 4 Carat Diamond Ring

On average, the cost of a 4 carat diamond ring can range from $30,000 to $250,000 or more, depending on the diamond’s cut quality, clarity and color. In general, the higher the quality of a diamond of this carat weight, the higher its price

Is it worth buying moissanite ring?Although moissanites are cheap, they aren’t valuable. While we usually don’t recommend diamonds as an investment (you’ll almost always lose money if you ever decide to sell), they do retain some value over the long term and can be passed down as a precious family heirloom — something you can’t do with a moissanite.

Diamond vs. Moissanite: Why Diamonds Are Worth the Money

By Michael Fried

Last Updated On: November 3, 2021

Bottom Line Recommendation:

Consider the lasting value and beauty of a gemstone before purchase. diamonds and moissanites are distinctly different in brilliance, hardness, composition and color. For a high-quality, excellently priced diamond, contact us today for a complementary search and expert advice.

If you are looking for a cheaper alternative to natural diamonds, we would recommend going the lab-grown-diamond route. You can find a stunning lab grown diamond from James Allen or Clean Origin for a fraction of the cost of a natural diamond. Take this stunning 2.00ct diamond from Clean Origin for example. It has the exact same physical properties of a natural diamond but is 60% cheaper. 

While moissanite and diamond have somewhat similar appearances from afar, the two stones differ significantly in several areas like brilliance, fire, durability and value. You can find a moissanite ring like this on Amazon for a fraction of the cost of a diamond ring, but it’s important to know the main differences—and in this guide, we’ll share everything you need to know.

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What is Moissanite?

Moissanite is a near-colorless gemstone that’s composed of silicon carbide. First discovered by Henri Moissan, a French scientist, moissanite was originally found in the crater left behind by a fallen meteor. 

Although they look similar at first glance, moissanite is very different from a diamond. Diamonds are made of carbon, whereas moissanites are made of pure silicon carbide — an extremely rare,  naturally-occurring mineral. 

The natural moissanite discovered by Moissan in 1893 is exceptionally rare, making it practically impossible to use natural moissanite for jewelry. As such, the moissanite sold today is produced by laboratories. 

Although it’s made to seem like diamonds, moissanite varies from diamond in both composition and in appearance.

Think You’re A Diamond Pro?

Both of these are advertised as 1.0 Carat
D Color diamonds.
One is real and costs $8,820
One is Moissanite and costs $175
Can you tell which is the real diamond?

Diamond vs. Moissanite: Price

A diamond’s price and value is dependent on its 4 C’s (CutColorClarity and Carat). These elements work together to form the beauty and brilliance of the stone. Because diamonds are mostly natural rather than artificial, they can vary hugely in price, value and quality.

On the other hand, most moissanites tend to cost the same price, except when two stones differ in size and type of moissanite material—enhanced or unenhanced.

While price differs between diamond and moissanite, it’s essential to realize that the features, quality and beauty of diamonds and moissanites differ significantly. Just because the price is lower, it does not mean you’re getting a better deal or a better value.

To outline the price difference of moissanite vs. diamond side by side, we’ve compiled the below chart. Although the prices differ, the lasting value and actual beauty of a moissanite vs. diamond is incomparable.

Note: Moissanite weighs approximately 15% less than diamonds. Therefore, an accurate comparison of price is not possible. Instead of using Carat weight, moissanites are priced on their size in millimeters. We have estimated a close comparison below.

Size (in Carats)Diamond PriceSize (closest equivalent to Carats)Moissanite Price

The table above shows a comparison between diamonds in various carat weights and moissanite stones in roughly corresponding sizes.

At the low end, you can see that a half-carat diamond costs more or less twice as much as a similarly sized moissanite. And this price ratio increases with size too, with a 6.5mm moissanite stone costing around $850 which is 80% less than a 1ct diamond with a similar diameter.

Diamond vs. Moissanite: Color

Although moissanites and diamonds can look similar in color when seen from a distance or in poor lighting, there are significant color differences between them that are more obvious when the two are viewed up close.

Diamonds are graded on a GIA Color scale from D to Z, while moissanites are not categorized by their color. Moissanites are, however, not colorless and resemble the K grade on the GIA color scale used to grade the color of diamonds.

When under certain lights, yellow and green tints can be seen in moissanites. The larger the moissanite, the easier it is to notice yellow, gray or green tints. At large sizes, it’s generally easy to notice the stark difference from a diamond.

Nearly colorless diamonds, ranging from D to J on the GIA scale, will contain no hints of yellow or gray tinting. Color is one element that make diamonds sparkling white, and it is hard to mistake a moissanite for the clear, natural beauty of a diamond.

Forever Brilliant Moissanite vs. Diamond

Over the years, there have been various efforts to produce artificial moissanites that were free of color. If you’ve looked into moissanite jewelry, you might have heard of the Forever Brilliant moissanite produced by Charles & Colvard. 

Forever Brilliant was the first of several colorless-looking moissanites produced by Charles & Colvard. The Forever Brilliant brand has since been discontinued, but you can still track down information on these moissanites online.

Essentially, these moissanites were slightly more colorless than the conventional manmade moissanites used in rings and other jewelry. However, due to technological limitations, they weren’t completely free of color like a diamond. 

Estimates for the approximate GIA diamond color grade of a Forever Brilliant moissanite can vary, although most diamond experts estimate that they’re roughly equivalent to a diamond in the G to I range. (Forever Classic, another range of moissanites, are closer to J to K.

Forever One Moissanite vs. Diamond

Charles & Colvard followed up the Forever Brilliant moissanite with Forever One — a newer, more advanced colorless moissanite — in 2015.

Forever One moissanites are marketed as the company’s high-end moissanite line. They’re promoted as hand-cut, flawless and made using the finest moissanite rough available. They claim to be totally colorless, equivalent to a D, E or F GIA diamond color grade.

In terms of color, Forever One moissanites are certainly closer to being colorless than older “colorless” artificial moissanites such as Forever Brilliant. With this said, the equivalent color grades used for these stones aren’t always a very accurate or useful comparison.

These moissanites also differ from diamonds in several noticeable ways. Silicone carbide is a very different material from diamond, meaning it displays color differently and disperses light in a different pattern. Ultimately, even a Forever One moissanite won’t look like a diamond.

Diamond vs. Moissanite: Clarity

The clarity of a moissanite refers to the amount (or lack of ) blemishes and inclusions that are visible in the stone. Like diamonds, moissanites are generally imperfect, meaning they’ll often have small blemishes that are visible when they’re viewed under magnification.

Almost all moissanites sold are graded for clarity using a scale similar to that used by the GIA and other grading entities to assess the clarity of diamonds. 

It’s important to note that the clarity grade for a moissanite isn’t given by the GIA, AGS or any other impartial gemological lab — instead, the clarity grade (and certificate, if the moissanite is sold with one) is often given with the stone by its manufacturer or seller.

Since moissanites are artificial, unlike natural diamonds, it’s very uncommon to see moissanites with a clarity grade below the VS level for sale. In general, the clarity of a moissanite is close to flawless almost all the time.

Diamond vs. Moissanite: Cut

Like diamonds, moissanites are available in a variety of different cuts. You can find round, oval, pear, cushion, princess and radiant cut moissanites. Some moissanites are even cut in antique cuts that were widely used for diamonds hundreds of years ago. 

The most popular cut for moissanites is the round brilliant cut. There are several reasons for the round brilliant cut’s popularity:

  • Brilliance. Like with a diamond, the round brilliant cut offers the greatest brilliance and fire. This means that the stone will sparkle when it’s exposed to bright light, which enters into the stone and bounces off its facets in different directions.
  • Color. The round brilliant cut is the best cut for hiding color and making a stone appear nearly or completely colorless. This is an advantage for a moissanite, as it helps to hide the yellow and green tints that are typically visible in moissanites.
  • Versatility. The round brilliant cut is extremely versatile, with a design that looks great in modern and vintage engagement rings and other jewelry.

Generally, moissanites look the best in cuts that hide color and emphasize the stone’s brilliance, such as the princess cut (for moissanites, this shape is often referred to as the “square cut”), as well as the oval cut, radiant cut and marquise cut. 

Diamond vs. Moissanite: Hardness

On the Mohs scale of hardness, a moissanite measures in at 9.25, while a diamond has a score of 10 —  the maximum on the scale.

The Mohs scale is used to measure a gemstone’s hardness, or in other words, its durability. The scale ranges from 1 as the softest to 10 as the hardest. The Mohs scale shows one of the most obvious distinctions between a moissanite and a diamond.

As the hardest known mineral,diamonds are incredibly durable and resilient. This makes them perfect for everyday wear and engagement rings, as they’re able to resist scratches and other damage that could affect the appearance of softer stones.

To gain perspective on mineral hardness, we display the Mohs scale below. As the chart demonstrates, diamonds are harder than some very durable minerals such as steel and Tungsten carbide.

Now, does this mean that moissanites scratch? Not quite. Although moissanite is lower on the scale than a diamond at 9 to 9.5, moissanites are still durable. The only minerals that scratch a moissanite are those equal or higher on the scale — namely, diamonds and other moissanites.

The Mohs Scale of Hardness

HardnessSubstance or mineral
>10Nanocrystalline diamond (hyperdiamond, ultrahard fullerite)
9Tungsten carbide
8Cubic zirconia
5Apatite (tooth enamel)
2–2.5Halite (rock salt)

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