Necklace chains are often made
"too strong and too durable" are "resistant to breaking" and become dangerous for little necks

The strength of a chain “isn’t regulated” Necklaces come in a wide variety of materials. While we often worry about necklaces being too fragile and breaking easily, it’s also crucial to consider the opposite: necklaces that are too strong or durable. In some cases, necklaces made from very strong materials, such as tough metals, can pose a risk if they get caught on something or if the child is involved in rough play. The danger isn’t always visible, and it’s often the case that we don’t know the true strength or safety of a necklace.