It is a laceration that interrupts harmony.

It is a jagged and sharp edge that can hurt.

The injury can hurt or defend us.

It is attractive, although obviously dangerous.

Do you ever wear something that hurts you?

This is an extreme glass jewel. It is something to wear but can hurts you (It looks so dangerous, but it is not so dangerous).

If you are willing to wear it you must be aware of its nature.