Moissanite Grillz UK: Are They Worth It?
If you've been looking into iced-out grillz, you've almost certainly come across moissanite. It's one of the most requested stone options for custom grillz — and increasingly, the first choice over lab diamonds for people who want maximum visual impact. But what exactly is moissanite, how does it compare to diamond, and is it worth choosing for your grillz? Here's a straight answer.
What Is Moissanite?
Moissanite is a gemstone made from silicon carbide (SiC). It was first discovered in 1893 by French chemist Henri Moissan in a meteorite crater in Arizona — he initially thought he'd found diamonds. The natural form is extraordinarily rare; virtually all moissanite used in jewellery today is lab-created.
It's not a diamond alternative in the sense of being a cheap imitation — moissanite is a distinct stone with its own optical and physical properties, several of which actually exceed diamond. It's an extremely hard material (9.25 on the Mohs scale, vs diamond's 10), highly durable, and produces significantly more fire — the coloured light dispersion — than diamond.
Moissanite vs Lab Diamond: The Key Differences
| Property | Moissanite | Lab-Grown Diamond |
|---|---|---|
| Hardness (Mohs) | 9.25 | 10 |
| Refractive index | 2.65–2.69 | 2.42 |
| Fire (light dispersion) | Higher — more rainbow flash | Lower — more white sparkle |
| Brilliance | Very high | Very high |
| Colour | Near-colourless to slight warmth | D–Z grading |
| Price (relative) | Significantly lower | Higher |
| Certification | GRA or similar | IGI, GIA |
| Origin | Lab-created (SiC) | Lab-grown carbon |
The refractive index difference is the most important thing to understand. Moissanite bends light more than diamond, which produces more "fire" — the rainbow flash you see when light hits the stone at certain angles. Whether this is better or worse is a matter of preference: some people love the high-fire look, others prefer the more restrained white sparkle of diamond. At grillz scale — many stones packed together — moissanite's fire is highly visible and creates a striking effect, particularly under direct or stage lighting.
Why Moissanite Works Particularly Well for Grillz
A few factors make moissanite an especially strong choice for grillz specifically:
Scale. A bustdown grillz set can contain hundreds of individual stones. The cost difference between moissanite and lab diamond multiplied across that many stones is substantial — moissanite makes a fully iced set achievable at a price point that would be significantly higher with lab diamonds.
Visibility at distance. Grillz are viewed at conversational distance, in varied lighting, and often in motion. Moissanite's higher fire means it catches and disperses light very visibly across the full surface of a bustdown set — arguably more impressively than the same stones in lab diamond at standard grillz viewing distances.
Durability. At 9.25 Mohs, moissanite is extremely scratch-resistant and well-suited to the wear conditions of grillz — occasional handling, cleaning, storage, and contact with the inside of the mouth.
Coloured options. Moissanite is available in coloured variants (pink, blue, yellow, green, rainbow) that allow for personalised iced-out pieces not easily achievable with standard lab diamonds.
Is Moissanite "Fake"?
No — moissanite is a real gemstone with its own material properties, hardness, and optical characteristics. It is not a simulant in the same way that cubic zirconia (CZ) is — CZ is significantly softer, loses its sparkle much faster, and is optically quite different from diamond.
The distinction worth knowing:
- Moissanite — distinct gemstone (silicon carbide), very hard, high fire, durable, lab-created
- Lab diamond — chemically identical to mined diamond (carbon), graded the same way
- CZ — glass-like simulant, cheap, low durability, loses brilliance quickly
Cheap grillz sold online sometimes use CZ as the "diamond" substitute. The visual difference between CZ and moissanite is significant — CZ lacks fire and dulls much faster. If you're buying iced grillz, asking specifically about the stone type (moissanite vs CZ) is worth doing.
VVS Moissanite: What Does It Mean?
You'll often see moissanite grillz described as "VVS moissanite." VVS (Very Very Slightly Included) is a clarity grade from the diamond grading system. When applied to moissanite, it refers to the same standard — stones with minimal inclusions visible only under 10x magnification.
For grillz purposes, VVS clarity moissanite means clean, bright stones with no visible inclusions to the naked eye — which is what you want in a bustdown setting where stones are closely packed together.
Moissanite Grillz Pricing in the UK
Moissanite grillz are significantly more affordable than equivalent lab diamond pieces while delivering comparable (or in some lighting conditions, superior) visual impact.
| Style | Moissanite / Silver | Moissanite / Gold |
|---|---|---|
| Single tooth bustdown | from £186 | from £280 |
| 4–6 tooth row, stone trim | from £239 | from £350+ |
| Full top, bustdown | from £350+ | from £500+ |
| Full double set, bustdown | from £600+ | POA |
For a full pricing breakdown across all styles and materials, see our grillz cost guide.
Who Should Choose Moissanite?
Choose moissanite if:
- You want a fully iced bustdown set at the most accessible price point
- You love the high-fire, rainbow-flash visual — especially under direct or performance lighting
- You want coloured stones (pink, blue, etc.) in your design
- You're maximising visual impact per £ spent
Consider lab diamond if:
- You specifically want diamond certification (IGI/GIA graded stones)
- You prefer the more restrained white sparkle of diamond over moissanite's fire
- Budget is secondary to stone prestige
For most people ordering grillz — particularly fully iced sets — moissanite delivers the better result for the investment.
Frequently Asked Questions
Can you tell the difference between moissanite and diamond in grillz? Most people can't tell at a glance, and in a bustdown setting the stones are so densely packed that individual stone characteristics are much less visible than they would be in a single solitaire ring. The main visible difference is moissanite's higher fire — more rainbow flash — which many people prefer.
Does moissanite scratch or chip? At 9.25 on the Mohs hardness scale, moissanite is extremely scratch-resistant and durable under normal wear conditions. It won't scratch from contact with teeth or standard cleaning. Chipping from a heavy direct impact is possible, as with any gemstone, but not a concern for typical grillz wear.
Will moissanite dull over time? No — unlike CZ, moissanite does not dull or cloud with age. The optical properties are stable. Regular cleaning keeps the stones looking bright; see our grillz cleaning guide for how to clean stone-set pieces properly.
Are coloured moissanite grillz popular? Yes — pink moissanite in particular is one of the most requested customisations for women's grillz. Blue, yellow, and rainbow options are also available. See our women's grillz guide for examples.
Is moissanite safe to wear in the mouth? Yes. Moissanite is chemically inert and non-toxic. It's a stable mineral that doesn't react with saliva or other oral chemistry. As with all grillz, cleaning after each wear is recommended for hygiene.
What's the difference between moissanite grillz and "diamond grillz" advertised cheaply online? Low-cost "diamond grillz" typically use CZ (cubic zirconia), not moissanite or diamond. CZ is much softer, clouds over time, and has a noticeably different look. If sparkle and durability matter to you, always clarify what stone is actually being used before purchasing.
Get Your Moissanite Grillz Custom-Made
Every Ice Jeweller moissanite piece is hand-set with VVS moissanite, custom-designed from your dental impression, and crafted in solid silver or gold — with a free impression kit and free UK delivery.
