Size guide: Choosing the right size of rhinestones for teeth

Quick response

For a natural look: often aim for SS2 to SS5 . For a more noticeable look: SS6 to SS9 . Standard shapes are generally ~ 3 to 4 mm (more common), and micro-shapes are closer to a “mini” look like SS2.

1) Understanding SS sizes (and why “1 mm” changes everything)

The "SS" size designation is a standard used for crystals/rhinestones. In practice, a few tenths of a millimeter are enough to make a piece of jewelry go from "subtle" to "very noticeable." SS↔mm conversion charts show standardized equivalents (e.g., SS3 ≈ 1.4 mm).

2) Table: Classic round sizes (SS2 → SS9) in millimeters

Reference points (classic circles):

These SS↔mm correspondences are consistent with the charts commonly used in the world of dental rhinestones.

3) Which size to choose depending on the tooth and the desired result

Rendered “naturally” (no one can see it from a distance)

• SS2 : micro light-up touch (perfect if you have a thin smile or if you want to “test”).
• SS3 : discreet but legible, ideal as a first piece of jewelry.
• SS4 : discreet + sufficiently visible in photos.

Rendered “balanced” (visible when you smile)

• SS5 : the most versatile size (neither too small nor too large).
• SS6 : visible, perfect if you like the “sparkle” without excess.

A “bold” look (a deliberate jewelry effect)

• SS7 : very visible, catches the eye.
• SS9 : maximum visual impact (reserved for teeth with sufficient surface area and a very bold style).

4) Shapes: standard sizes vs. micro-shapes

Shapes (heart, shuttle, etc.) are often more prominent than a circle because they cover more surface area. At Tooth Gems World:

• Standard shapes : approximately 3 to 4 mm (width/height), more visible effect.
• Micro-shapes : much smaller, a rendering comparable to a “mini” key, close to an SS2 type perception.

Popular design example: the butterfly

The "butterfly" design (very popular) consists of 2 marquise-shaped rhinestones + 2 round SS5 rhinestones . The result: a visible but harmonious pattern, often more flattering than a single large rhinestone, because it "draws" the smile.

5) Materials: crystal, opal, gold — how to choose

Classic rhinestones & shapes (crystals)

Your crystals are lead-free : a glass base with 15 facets , a reflective silver layer, and a protective satin layer to allow the color to show through. Ideal if you want maximum brilliance and a wide selection (you have 80+ colors ).

• Discover our round tooth gems here
• Discover our tooth gem shapes here

Opal jewelry

Your opals are made of reconstituted opal (80% silica / 20% resin): a more pearly, often softer and more luminous finish than crystal. A good choice if you prefer a less flashy, luminous effect and original colors and shapes.

Discover all our opal dental jewelry here.

Gold jewelry

Your gold jewelry is made of 18k gold (75% gold) with palladium and a 0.02 carat SI diamond. Available in two colors: yellow gold and white gold . Recommended if you want a premium, "jewelry-like" and timeless look.

Discover all our gold dental jewelry here.

6) Colors: how to avoid the “it’s not noticeable” mistake

• Bright smile / very light teeth : light tones can be subtle → opt for either a pearly effect (opal), or a color that contrasts slightly.
• Photo/video rendering : SS4–SS6 + “sharp” colours stand out better.
• Ultra chic look : gold (yellow/white) or opal + modest sizes (SS2–SS5).

Tip: if you are hesitating between two sizes, choose the smaller one for your first piece of jewelry (you can always go up a size later).

7) Safety & “safe” tips (read before choosing)

Jewelry glued to the teeth can promote plaque retention if hygiene isn't impeccable, and improper insertion and removal can weaken the enamel. Many sources recommend a cautious approach: professional advice, gentle hygiene, and supervised removal.

• Avoid unserious DIY : viral trends can increase the risks (enamel chipping, peeling, ingestion/aspiration).
  • At Tooth Gems World, we offer professional-quality DIY products.
    
    • Discover our DIY tooth gems
• If you have veneers/crowns , the hold may be less good and the risks may change: seek advice.
• After application: gentle brushing, be careful with hard foods at first (aftercare advice emphasizes gentleness and caution).

8) Common mistakes (and how to avoid them)

• Going too big from the start (ex: SS9) → results in a “massive” and less harmonious look on some smiles.
• Choosing a standard 3–4 mm shape thinking it is “small” → the shapes cover more than the circles.
• Ignoring personal style : the prettiest rhinestone is the one you own.
• Colour too close to the tooth → “you can’t see anything” (unless that’s the desired effect).
• Neglecting hygiene around the jewelry → risk of plaque/irritation.

9) Choice checklist (ultra simple)

1. I want a result that is: discreet / balanced / bold .
2. I choose the size: SS2–SS4 / SS5 –SS6 / SS7–SS9.
3. I choose: round (minimalist) or shape (more present) / micro-shape (mini).
4. I approve the material: crystal (flash), opal (glow), gold (premium).
5. I choose the color: slight contrast if I want it to be visible.
6. I check the “safe” points (hygiene, dental context, precautions for insertion/removal).

Recommendations (next steps)

• Dental rhinestones and psychology: The impact of shine on self-confidence

• Design ideas: placements & compositions (micro, duo, butterfly…)

FAQ: SS sizes, shapes and jewelry selection

What is the most popular size for a balanced look?

SS5 is often the best compromise: visible without being too imposing.

Is SS2 too small?

No: it's perfect for a very chic "micro" look, especially if you want to test it out or remain ultra discreet.

Why do shapes appear larger than a circle?

Because a shape (3–4 mm) covers more surface area and “draws” the smile more than a circle of 1.8–2.2 mm.

Opal or crystal: which is more visible?

Crystal gives a more "sparkly" shine. Opal offers a softer, pearly finish.

Can they be used if you have a veneer/crown?

The fit may be different and the risks may vary: it is best to seek advice before installation.

What care is needed after the procedure?

Gentle brushing and caution during the first 24 hours are often recommended; avoid handling the jewelry.

Is it risky for the enamel?

Improper application/removal can weaken the enamel: be careful, and avoid "home" removal methods.

Conclusion

To choose the right piece of jewelry, keep three factors in mind: size (SS), shape (micro vs. standard), and material (crystal/opal/gold). For a complete overview of the world of dental jewelry , including care and best practices, see our guide.