Three clear stones.

Three very different price points.

And, at first glance, considerably more similarity than many shoppers expect.

Diamond, moissanite and cubic zirconia can all create a bright, light-catching jewellery look, but they are not different grades of the same stone.

They are different materials with different optical properties, levels of durability and price positions.

Knowing what separates them makes it much easier to decide what you are actually paying for and, more importantly, which one suits the way you intend to wear your jewellery.

THE SHORT ANSWER

Diamond offers the greatest hardness, a classic combination of brilliance and fire, and the strongest association with traditional fine jewellery. Natural and laboratory-grown diamonds are both diamonds. Laboratory-grown diamonds possess essentially the same chemical, physical and optical properties as natural diamonds, although they have different origins.

Moissanite is a different gemstone material, generally laboratory-created for jewellery. It is exceptionally hard, highly durable and famous for its intense rainbow fire. GIA places its hardness at approximately 9.25 on the Mohs scale and notes that moissanite produces more than twice the fire of diamond. 

Cubic zirconia, usually shortened to CZ, is a synthetic diamond simulant. It offers bright sparkle at a very accessible price, but at around 8.5 on the Mohs scale, it is softer than both diamond and moissanite and therefore more susceptible to visible wear over time.

So if you are looking for a simple starting point:

Diamond: maximum hardness and traditional prestige
Moissanite: exceptional sparkle and durability at a more accessible price
CZ: maximum affordability and styling freedom

That is the basic difference.

The interesting part is what happens when we look closer.

---

MOISSANITE VS DIAMOND VS CZ AT A GLANCE

GIA identifies diamond at 10, moissanite at approximately 9.25, and CZ at approximately 8.5 on the Mohs hardness scale. 

---

WHAT IS MOISSANITE?

Moissanite is made from silicon carbide.

Natural moissanite does exist, but it is extremely rare. The material used in modern jewellery is therefore typically laboratory-created. GIA research describes colourless synthetic moissanite as silicon carbide and notes that its hardness is second only to diamond among the stones relevant to this comparison. 

But the reason moissanite has attracted so much attention is not simply that it resembles diamond.

It is what happens when light hits it.

MOISSANITE SPARKLE IS DIFFERENT

Moissanite is renowned for its fire, the coloured flashes created when white light separates into spectral colours.

GIA reports that moissanite produces more than twice the fire of diamond and slightly more brilliance. 

In practical terms, this can create flashes of:

red;

blue;

green;

yellow;

and other colours as the stone moves through light.

It is particularly noticeable under spotlights, evening lighting and direct sunlight.

Some people want the more restrained appearance traditionally associated with diamond.

Others see moissanite under the right lighting and immediately understand its appeal.

It does not simply sparkle.

It performs.

That makes it especially attractive for tennis necklaces, bracelets, eternity designs and statement pieces where light travels across multiple stones.

---

WHAT IS A DIAMOND?

Diamond is crystallised carbon and sits at 10 on the Mohs hardness scale, making it the hardest of the three materials compared here.

But there is another distinction shoppers should understand.

NATURAL DIAMONDS AND LAB-GROWN DIAMONDS ARE BOTH DIAMONDS

A laboratory-grown diamond is not cubic zirconia.

It is not moissanite.

And it is not a diamond imitation.

GIA states that laboratory-grown diamonds possess essentially the same chemical composition, crystal structure, optical properties and physical properties as natural diamonds. Their key difference is origin. One forms through geological processes; the other is grown technologically. 

This is why a comparison of diamond, moissanite and CZ should never describe lab-grown diamonds as simply another diamond substitute.

They are diamonds.

For shoppers, diamond's principal advantages remain:

exceptional hardness;

excellent durability;

the traditional diamond appearance;

long-term fine-jewellery suitability;

and cultural significance, particularly for engagement and milestone jewellery.

The trade-off is price.

That difference becomes particularly noticeable as stone size increases or when a design uses many stones.

---

WHAT IS CUBIC ZIRCONIA?

Cubic zirconia is a man-made material commonly used as a diamond simulant.

GIA explains that CZ is manufactured from zirconium oxide and became widely used as a diamond imitation from the late 1970s onward.

CZ can be remarkably attractive when new.

It can be:

clear;

highly polished;

available in large sizes;

and produced in many colours.

That makes it extremely useful in fashion-led jewellery where affordability, size or experimentation is more important than maximum long-term durability.

But it is softer than both diamond and moissanite.

At approximately 8.5 Mohs, CZ is hard enough for jewellery, but repeated wear can gradually affect the crispness of its polished facets. GIA also notes that CZ has less brilliance than diamond, although it can show slightly more fire. 

This is one of the clearest differences between a low-cost CZ piece and a high-quality moissanite piece after months or years of wear.

---

IMPORTANT: CUBIC ZIRCONIA IS NOT ZIRCON

This deserves its own section because the terms are often confused online.

Zircon is a natural gemstone.

Cubic zirconia is a man-made material.

They are not the same thing.

GIA explicitly describes zircon as a natural gemstone that is often unfairly confused with cubic zirconia.

So if you see:

zircon

and:

cubic zirconia / CZ

on two product descriptions, do not assume they are interchangeable terms.

They describe different materials.

---

WHICH ONE SPARKLES THE MOST?

This is where the comparison becomes particularly interesting.

If by sparkle you mean colourful flashes of light, moissanite has the advantage.

GIA reports that moissanite has more than twice the fire of diamond. 

That is why moissanite can produce the spectacular rainbow flashes that have made it so popular in contemporary jewellery.

Diamond offers a different light performance.

Its sparkle is often perceived as a mixture of bright white brilliance and coloured fire, producing the classic diamond look.

CZ can also produce significant fire, but GIA notes that it has less brilliance than diamond. 

So rather than asking:

Which stone sparkles?

ask:

What kind of sparkle do you prefer?

MOISSANITE

More colourful, energetic and attention-grabbing.

DIAMOND

Classic, crisp and balanced.

CUBIC ZIRCONIA

Bright and decorative at the most accessible price point.

There is no universally correct aesthetic answer.

But if maximum visible sparkle is high on your priority list, moissanite deserves serious attention.

---

WHICH IS THE MOST DURABLE?

1. DIAMOND

With a hardness of 10, diamond sits at the top of the Mohs scale. 

It is exceptionally resistant to scratching and extremely well suited to jewellery intended for frequent wear.

2. MOISSANITE

At approximately 9.25, moissanite follows remarkably closely for practical jewellery use. 

This is important.

Moissanite is not simply chosen because it is less expensive than diamond.

Its durability is one of the reasons it works so well in jewellery intended to be worn regularly.

For someone who wants a brilliant stone in a ring, bracelet or necklace that will see frequent use, that is a significant advantage.

3. CUBIC ZIRCONIA

CZ's approximately 8.5 hardness still makes it a viable jewellery stone, but it is more susceptible to scratching and surface wear than moissanite or diamond.

For occasional pieces, trend jewellery or designs you enjoy changing regularly, that may be perfectly acceptable.

For a piece you expect to wear constantly for many years, moissanite or diamond offers a stronger durability proposition.

---

THE PRICE DIFFERENCE

This is where the categories separate dramatically.

Diamond generally requires the greatest financial commitment.

CZ usually sits at the most accessible end of the spectrum.

Moissanite occupies the space between them.

And that middle position is precisely what makes moissanite interesting.

It allows you to consider:

a larger centre stone;

a full tennis bracelet;

a graduated necklace;

an eternity design;

or more elaborate stone coverage

without automatically taking on the price associated with an equivalent diamond-heavy design.

That does not mean moissanite is trying to be a cheaper diamond.

Its visual character is distinct.

But it does mean you can allocate more of your budget towards design, scale and styling freedom.

For many jewellery lovers, that is a powerful trade.

---

WHY MOISSANITE HAS BECOME SO COMPELLING

This is where we arrive at what, for FEROYAL, is perhaps the most interesting part of the comparison.

Moissanite combines three qualities that rarely appear together:

SERIOUS SPARKLE

Its extraordinary fire makes it one of the most visually expressive clear stones used in jewellery.

SERIOUS DURABILITY

A hardness of approximately 9.25 makes it highly suitable for frequent wear.

MORE ACCESSIBLE DESIGN POSSIBILITIES

Because it does not carry the same price structure as diamond, it becomes possible to explore larger stones, full tennis designs and more dramatic pieces without the financial commitment of diamond equivalents.

That combination makes moissanite particularly well suited to the demi-fine jewellery sweet spot.

It feels luxurious.

It looks spectacular.

It withstands regular wear.

Yet it leaves far more freedom to actually build a jewellery wardrobe.

---

THE FEROYAL MOISSANITE EDIT

At FEROYAL, moissanite appears across pieces designed for very different parts of life.

The Dainty Sparkle Moissanite Chain Ring shows how a small moissanite detail can work in a delicate everyday piece.

The Alliance Bracelet takes the opposite approach, using repeated sparkle to create the recognisable tennis-bracelet effect.

And the Gradient Sovereignty Necklace uses graduated moissanite stones to create substantially more presence, making the light performance of the stone part of the design itself.

FEROYAL's Event Royale collection also includes several moissanite-led pieces created for occasions when jewellery is meant to be noticed. 

This range demonstrates something important:

Moissanite does not have to imitate one particular kind of diamond jewellery.

It can be delicate.

It can be classic.

It can be dramatic.

It can be everyday.

That versatility is one of its greatest strengths.

---

SO, IS MOISSANITE A "FAKE DIAMOND"?

This language is common, but it is not especially useful.

Moissanite and diamond are different materials.

Moissanite used in modern jewellery is generally laboratory-created silicon carbide, while diamond is crystallised carbon. 

Moissanite can certainly be used as a diamond simulant because the two can look similar.

But buying moissanite does not require pretending it is diamond.

Its durability and intense fire give it characteristics worth choosing in their own right.

That is a much better way to approach the decision.

Do you want diamond?

Choose diamond.

Do you want the visual character and value proposition of moissanite?

Choose moissanite.

The material should be disclosed clearly, and the buyer should know exactly what they are getting.

---

WHICH STONE SHOULD YOU CHOOSE?

CHOOSE DIAMOND IF:

you specifically want a diamond;

maximum scratch resistance matters;

you are choosing a traditional engagement or milestone piece;

solid fine-jewellery value and long-term ownership are your priority;

or cultural significance matters to you.

CHOOSE MOISSANITE IF:

you love strong sparkle and rainbow fire;

you want excellent durability for frequent wear;

you want more stone presence for your budget;

you enjoy tennis jewellery, eternity styles and statement pieces;

or you want something that sits beautifully between everyday jewellery and traditional fine-jewellery pricing.

CHOOSE CUBIC ZIRCONIA IF:

budget is the primary consideration;

you enjoy changing your jewellery frequently;

you want large or colourful stones inexpensively;

the piece is primarily trend-led or occasional;

or long-term surface wear is less important to you.

---

THE FEROYAL VERDICT

Diamond remains exceptional.

CZ remains incredibly nice and convenient.

But moissanite occupies an unusually attractive space between them.

It offers far greater durability than many lower-cost simulants, extraordinary light performance and significantly more freedom in size and design than many shoppers would have with diamond.

For someone building a modern jewellery wardrobe rather than buying only one or two precious pieces for life, that matters.

You can still own diamond.

You can still enjoy CZ.

But moissanite gives you another possibility:

Exceptional sparkle without having to save it for someday.

And that is very close to the philosophy behind modern demi-fine jewellery itself.

Beautiful enough to feel extraordinary.
Practical enough to become part of everyday life.

EXPLORE MOISSANITE JEWELLERY

---

FREQUENTLY ASKED QUESTIONS

Is moissanite a real gemstone?

Yes. Moissanite is a distinct gem material made from silicon carbide. Natural moissanite exists but is extremely rare, so jewellery moissanite is typically laboratory-created.

Is moissanite the same as a lab-grown diamond?

No. A lab-grown diamond is diamond and has essentially the same chemical, physical and optical properties as a natural diamond. Moissanite is a different material. 

Which sparkles more, diamond or moissanite?

Moissanite displays substantially more coloured fire than diamond. GIA reports that it has more than twice the fire of diamond. 

Is moissanite durable enough for everyday wear?

With a Mohs hardness of approximately 9.25, moissanite is highly resistant to scratching and well suited to frequent jewellery wear. 

Is cubic zirconia the same as zircon?

No. Zircon is a natural gemstone, while cubic zirconia is a synthetic material. 

Does cubic zirconia last as long as moissanite?

CZ is softer at approximately 8.5 Mohs compared with moissanite at approximately 9.25, so it is generally more vulnerable to scratching and visible surface wear. 

Is diamond always better than moissanite?

No. Diamond offers greater hardness and traditional value, while moissanite offers more colourful fire and a much more accessible route to larger or more stone-intensive designs. Which is better ultimately depends on your priorities.