What ASTM F2923-20 Means on a Pair of Children's Earrings

Children's jewelry is sold with a lot of comforting language. "Hypoallergenic." "Kid-safe." "Gentle." "Non-toxic." Almost none of it is defined, tested or enforceable.

ASTM F2923-20 is the exception. It is a real specification with real tests behind it, and if you learn one thing to look for on a child's earring, it should be this rather than any adjective.

What it actually is

The full name is the Standard Specification for Consumer Product Safety for Children's Jewelry. ASTM International is a standards body — the same kind of organisation that decides what a bicycle helmet has to survive or how a playground surface has to behave.

The -20 is the revision year. Standards get updated, and the suffix tells you which version a piece was made to.

"Children's jewelry" here means jewelry designed or intended primarily for children 12 and under. That is a wider net than people assume — it includes a lot of what gets sold as "tween."

Worth being precise about its status: the standard itself is a voluntary consensus standard rather than a law in its own right. Separately, federal law already limits lead in children's products, and the standard is the benchmark the industry uses to demonstrate a piece has been made and tested properly. A brand naming it is making a specific, checkable claim. A brand saying "kid-safe" is making no claim at all.

What it covers

Five things, and each one exists because of a real way children's jewelry has hurt children.

Lead. The original reason the standard exists. Cheap children's jewelry was once a significant source of lead exposure, because lead is soft, heavy and cheap and it makes castings easy. Children put jewelry in their mouths. The limits here are strict.

Cadmium. When lead limits tightened, some manufacturers substituted cadmium, which is worse. The standard closed that door.

Nickel release. The most common contact allergy there is, and pierced ears are the most common route to developing it. The standard restricts how much nickel a piece may release against skin — which is the measurement that matters, because release is what skin actually experiences.

Small parts and detachable components. A choking assessment. Anything that can come off a child's jewelry is assessed for whether it could be swallowed or inhaled.

Sharp points and edges. Exactly what it sounds like, and it matters most on a piece worn continuously against skin.

There are further provisions for specific hazards — liquid-filled components and magnets among them — which is the kind of detail that tells you the standard was written by people who had seen the accident reports.

What it does not tell you

Just as important, and rarely stated.

• It is not a water rating. A piece can be made to the standard and still be unsuitable for a swimming pool. Those are separate properties and separate claims.
• It says nothing about whether the back will stay on. Retention is not what the standard measures. A push back tested to F2923-20 will still work loose in a bed, and a lost earring is how a new piercing closes.
• It is not a comfort or fit claim. Post length and gauge decide whether an earring sits well in a particular lobe. The standard has nothing to say about that.
• It is not an age recommendation. Whether a child is ready for pierced ears is a family decision, not a materials one.

A good children's earring needs the standard and a secure back and a sensible size. The standard is the floor, not the whole building.

How to check for it

Look for the designation itself, written out, on the product page: ASTM F2923-20. Not "meets safety standards," not "child-safe," not "tested" — the actual number.

If a page does not name it, that is your answer. A brand that has done the testing will say so, because the testing costs money and naming it is the return on that.

And if you are buying for a child and the page instead offers "hypoallergenic," remember that hypoallergenic is an unregulated word with no definition for jewelry — what "hypoallergenic" actually means covers why.

Where the LINNY CO range sits

Of the 761 pieces in the hypoallergenic range, 437 are made to ASTM F2923-20.

The children's collections are the part where it is universal rather than partial:

• Kids' necklaces — all 35 are 316L surgical-grade stainless steel, all 35 carry a waterproof rating, and all 35 are made to ASTM F2923-20.
• Kids' huggies — all 23, on the same three counts.
• Kids' hypoallergenic flat back studs — every style in the range is made to the standard.

The statement earrings are not, and do not claim to be. They are not children's jewelry and a large drop earring is not a child's piece, so a standard written for children would be the wrong claim to make about them.

Where to look

Kids' hypoallergenic flat back studs are the core range — 316L post, flat disc, screw fitting, tested to the standard. Kids' necklaces and kids' huggies are the same idea in other formats.

If a piercing is new, what to put in a newly pierced ear covers the timeline and why the first pair stays in.

Questions

Is ASTM F2923-20 required by law?

The standard itself is a voluntary consensus standard. Federal law separately limits lead in children's products, and F2923-20 is the benchmark the industry uses to show a piece has been made and tested to a known specification. Either way, a brand naming it is committing to something specific.

What age does it apply to?

Jewelry designed or intended primarily for children 12 and under. It is a wider range than most people expect and covers a lot of what gets marketed as tween jewelry.

Does it mean the earrings are hypoallergenic?

It means nickel release is restricted, which is the meaningful part of most hypoallergenic claims. It is a much stronger statement than the word itself, because there is a test behind it.

Does it mean my child can swim in them?

No. Water resistance is a separate property with a separate claim. Check for a water rating as well — the two often appear together on the same piece, but one does not imply the other.

Why do some styles have it and others not?

Because the standard is for children's jewelry. A large acetate statement earring is not a child's piece, so claiming a children's standard for it would be misleading rather than reassuring.

What if a product page does not mention any standard?

Assume nothing has been tested. Testing is a cost, and a brand that has paid it will say so. Silence on a children's product is worth taking seriously.