Choosing a gemstone for an engagement ring, wedding band, or custom jewellery piece is a highly personal decision. For many buyers, the choice comes down to two main contenders: moissanite vs. diamond. While both offer sparkle, durability, and beauty, they differ in origin, price, brilliance, and value. Understanding these differences can help you choose the gemstone that reflects not only your personal style, but also your values, lifestyle, and long-term goals. This guide walks through each of the major considerations, giving you a clear comparison to help you make a confident and informed choice.

Understanding the Origins of Moissanite and Diamond

Diamonds have been treasured for centuries, formed deep within the Earth under intense heat and pressure over billions of years. Most natural diamonds are mined from regions like Africa, Canada, and Russia. Lab-grown diamonds, which are chemically identical to natural diamonds, are also widely available today and considered a more ethical alternative to traditional mining. Moissanite, on the other hand, was first discovered in 1893 by French scientist Henri Moissan in a meteor crater. Natural moissanite gemstones are incredibly rare, which is why nearly all moissanite used in jewellery is lab-created. This makes moissanite a consistent, ethical, and sustainable option. Many buyers are drawn to moissanite rings because of its lab-based origins and low environmental impact. Others may value the legacy and symbolism associated with diamonds. Both are valid perspectives—what matters most is aligning your choice with what you value.

Appearance and Visual Differences

Visual appeal is often the first thing people consider when comparing moissanite vs. diamond. While they may appear similar at first glance, there are noticeable differences in how they reflect light and how they’re graded.

Brilliance and Fire

Diamonds are admired for their brilliance—the white light they reflect—and their fire, which is the dispersion of coloured light. Moissanite, while equally brilliant, actually disperses more fire than diamond. This means moissanite tends to give off more rainbow flashes, especially under artificial lighting. Some love the heightened sparkle of moissanite, while others find it slightly too flashy for their taste. If you’re after a more understated sparkle, a diamond may feel more classic and balanced in its light performance.

Colour Grading

Diamonds are graded on a precise scale established by the Gemological Institute of America (GIA), ranging from D (colourless) to Z (light yellow or brown). The less colour, the higher the grade and the more valuable the diamond. Moissanite is not graded on the same scale, but high-quality moissanite is typically considered near-colourless, roughly equivalent to a G-H on the diamond scale. Under certain lighting, some moissanite stones may show a subtle yellow, grey, or greenish tint, especially in larger sizes. The colour difference is often minimal, but if true colourlessness is a priority, diamond may be the better choice—particularly in white gold or platinum settings where colour can be more noticeable.

Clarity and Inclusions

Both diamonds and moissanite can contain inclusions—tiny imperfections formed during creation. Diamonds, especially those that are mined, are graded for clarity and may contain natural inclusions or blemishes. Lab-created moissanite tends to be nearly flawless and is generally sold with a high level of clarity. For buyers looking for a flawless appearance at a lower price, moissanite is often the preferred option.

Durability and Daily Wear

Durability is an essential factor for any jewellery piece that’s meant to be worn every day. Both moissanite and diamond are hard enough for long-term wear, but there are subtle differences.

Hardness on the Mohs Scale

Diamond sits at a 10 on the Mohs scale of hardness, making it the hardest known natural material. It resists scratches better than any other gemstone. Moissanite ranks at 9.25, making it the second hardest gemstone used in jewellery. This means it also stands up very well to daily wear, resisting most scratches and abrasions. While diamond wins out slightly in hardness, moissanite is more than durable enough for engagement rings and daily-wear jewellery. Here’s a quick visual breakdown of how moissanite and diamond stack up across key features—including sparkle, durability, and cost:

Feature	Diamond	Moissanite
Brilliance	High (white light sparkle)	Very high (strong rainbow fire)
Hardness (Mohs)	10 – the hardest natural material	9.25 – extremely durable
Colour Range	Graded D–Z (GIA scale)	Near-colourless (G-H equivalent)
Clarity	Varies, may contain natural inclusions	Typically very clear (lab-created)
Price (1ct example)	~$4,000+ for 1ct high-quality diamond	~$400–$600 for 1ct high-quality moissanite
Ethical Sourcing	Can be conflict-free or lab-grown	Always lab-created and eco-conscious
Resale Value	Higher resale and appraisal value	Lower resale value
Light Performance	Subtle sparkle, more traditional	Bold sparkle, highly reflective

Price and Value Considerations

Price is one of the most significant differences in the moissanite vs. diamond cost comparison. For budget-conscious buyers or those looking for a larger stone without a massive price tag, moissanite is an appealing choice.

Initial Cost Comparison

A high-quality moissanite can cost up to 90% less than a diamond of similar size and appearance. This price gap allows buyers to allocate more of their budget to the setting, side stones, or other custom features. Diamonds, whether mined or lab-grown, are priced based on the 4Cs: cut, colour, clarity, and carat weight. Even small differences in these factors can significantly affect cost. For those prioritising size or sparkle over tradition, moissanite is a compelling alternative.

Long-Term Value and Resale

Diamonds tend to hold their value better over time, especially if they are of exceptional quality and come with reputable certification. They’re also more widely recognized in the resale and appraisal markets. Moissanite has less resale value, partly due to its lower initial cost and wider availability. However, for many buyers, long-term value is less about resale and more about lasting personal significance.

Ethical and Environmental Impact

In today’s market, many buyers consider ethical sourcing and environmental impact just as important as price or appearance.

Sourcing and Production Methods

Traditional diamond mining has raised environmental and humanitarian concerns, including habitat disruption and conflict zones. While Canadian diamonds and certified conflict-free diamonds offer more ethical options, lab-created diamonds provide even greater peace of mind. Moissanite, being entirely lab-grown, is free from the ethical and environmental issues tied to mining. Its creation uses fewer natural resources and results in a significantly smaller carbon footprint.

Choosing the Right Stone for You

Choosing between moissanite and diamond is not simply about which stone is better. It’s about which stone is right for you.

Personal Style and Aesthetic Preferences

Some buyers are drawn to the classic, timeless look of a diamond. Others fall in love with the fiery brilliance of moissanite. There’s no wrong answer—it comes down to what you want your jewellery to say about you. Your lifestyle may also influence your choice. If you’re active, work with your hands, or simply want a stunning ring without the worry of damaging an investment piece, moissanite could be ideal. If symbolism and tradition are key for you, diamond may feel more meaningful.

Customization and Setting Compatibility

Both moissanite and diamonds can be cut into various shapes and set into almost any style. Whether you’re dreaming of a solitaire engagement ring, a vintage-inspired halo, or a modern three-stone design, either stone can be beautifully showcased. At Alberta Diamond Exchange, our custom design process allows you to explore both gemstones in your preferred setting, metal, and style. Whether you envision something timeless or something unique, we help you bring it to life.

Still Debating Moissanite vs. Diamond? Let ADX Help You Decide

Deciding between moissanite vs. diamond can be challenging, especially when both offer beauty, durability, and timeless appeal. By considering your budget, values, and personal style, you can confidently choose the gemstone that will become part of your life story. At Alberta Diamond Exchange, we’re here to make your decision easier. Whether you’re looking for the dazzling fire of moissanite or the classic brilliance of a diamond, our expert jewellers will guide you through the pros and cons of each option. Our custom design services ensure that whatever you choose, it will be crafted into a piece of jewellery that reflects your individuality. Contact Alberta Diamond Exchange today—where every piece of jewellery is crafted with experience, craftsmanship, and care.