Swarovski vs Zirconia vs Opal Tooth Gems — What Is the Difference?
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Not all tooth gems look — or perform — the same. Swarovski crystal, zirconia diamond, and synthetic opal are the three most popular gem types, and each has a distinct aesthetic, material composition, and ideal use case.
Here is a side-by-side breakdown to help you choose the right gem for your smile. If you're starting from scratch, a MintGemz Starter Kit bundles the gems with the bonding tools so you can apply whichever type you pick.
Swarovski Crystal Tooth Gems
Material: Precision-cut glass crystal, manufactured by Swarovski in Austria.
Look: High brilliance, rainbow light dispersion, multi-faceted sparkle. The classic tooth gem look — bright, eye-catching, and reflective from any angle.
Available sizes: 2.0mm–4.0mm flatback crystals across our standard sets.
Longevity: 2–6 months with a quality bonding system and correct aftercare.
Best for: Anyone who wants maximum sparkle and a recognisable, premium look. Swarovski is the industry standard for tooth gems for a reason — the cut quality is unmatched at this price point.
MintGemz options: Mixed colour sets, single-colour kits (white, green, blue), heart and star collections, cat paw sets, and the 14-gem complete set. Browse Swarovski gems.
Zirconia Diamond Tooth Gems
Material: Cubic zirconia (CZ) — a synthetic crystalline material that simulates the appearance of a diamond.
Look: Clear, white, diamond-like. Less rainbow dispersion than Swarovski, more of a pure white brilliance. Subtle and elegant rather than colourful and flashy.
Available sizes: Micro (1.0mm–2.0mm) up to standard flatback sizes.
Longevity: 2–6 months.
Best for: Anyone after a diamond-look accent rather than a coloured crystal. Zirconia gems suit a more understated, jewellery-like result — particularly micro zirconia sets for a fine jewellery effect.
MintGemz options: Micro translucent diamond set, heart-shaped zirconia charm, foiled mixed zirconia DIY kit. Browse zirconia gems.
Synthetic Opal Tooth Gems
Material: Synthetic opal — a laboratory-created opal that replicates the structure of natural opal without the porosity. Not plastic.
Look: Soft, iridescent colour-shift shimmer — colours move between white, pink, blue, and green depending on the angle of light. A dreamy, ethereal look that is completely different from the sparkle of crystal or zirconia.
Available sizes: Flatback shapes including round, star, butterfly, and bear.
Longevity: 2–6 months. Synthetic opal is non-porous and stable in the mouth — it will not tarnish, discolour, or absorb saliva.
Best for: Anyone who wants a softer, more unique aesthetic. Opal gems catch light differently than crystal — they glow rather than sparkle, which suits a Y2K, fairy, or pastel aesthetic particularly well.
MintGemz options: 7-gem opal assorted set, white diamond opal, blue diamond opal, pink bear, white bear, pink star, butterfly opal set. Browse opal gems.
What About Titanium and Silver Charms?
Shaped charms — characters, butterflies, crosses, stars — are made from titanium steel or 925 sterling silver. Both are hypoallergenic and won't tarnish in the mouth. Because charms have a larger surface area than a small flatback, they experience more leverage on the bond, so expect 1–4 months of wear rather than the 2–6 months typical of flatback gems.
Side-by-Side Comparison
| Feature | Swarovski | Zirconia | Opal | Charms |
|---|---|---|---|---|
| Look | Colourful sparkle | Diamond-white brilliance | Soft iridescent shimmer | Shapes and characters |
| Material | Precision-cut glass | Cubic zirconia | Synthetic opal | Titanium / 925 silver |
| Longevity | 2–6 months | 2–6 months | 2–6 months | 1–4 months |
| Tarnish-resistant | Yes | Yes | Yes | Yes |
| Best aesthetic | Bold, classic, Y2K | Subtle, fine jewellery | Dreamy, ethereal | Statement, playful |
Which Tooth Gem Should I Choose?
If you want maximum sparkle — go Swarovski. If you want a diamond look — go zirconia. If you want something unique and glowing — go opal. If you want a shape or character — go titanium or silver, and expect a slightly shorter wear time. All four bond with the same cosmetic-grade 3-step system, so you can mix and match across applications.
Browse all gem types at mintgemz.com — and use MINTGEMZ10 for 10% off your first order.
Related reading
- Tooth gem designs & placement ideas — where to put your chosen gem
- How long do tooth gems last — by gem type
- How to choose a tooth gem kit — what to check before buying
Cosmetic use only — not a substitute for professional dental care. Not suitable for everyone. Consult your dentist if you have weak enamel, cavities, gum disease, or braces.