[RPG] Does using the Message cantrip dismiss invisibility

I did some research and cannot find any sort of official ruling for this. Although it seems to me the the answer is clear.

You can whisper messages and receive whispered replies. Those nearby can hear these messages with a DC 25 Perception check. You point your finger at each creature you want to receive the message. When you whisper, the whispered message is audible to all targeted creatures within range. Magical silence, 1 foot of stone, 1 inch of common metal (or a thin sheet of lead), or 3 feet of wood or dirt blocks the spell. The message does not have to travel in a straight line. It can circumvent a barrier if there is an open path between you and the subject, and the path's entire length lies within the spell's range. The creatures that receive the message can whisper a reply that you hear. The spell transmits sound, not meaning; it doesn't transcend language barriers. To speak a message, you must mouth the words and whisper.

By RAW, it specifically says the in the spell, you must mouth the words and whisper.

As for how you should rule? What makes sense for your campaign? Vote, houserule, or go by what the spell says.

The light spell says:

Completely covering the object with something opaque blocks the light.

The amulet may not be visible, but it is not covered. Therefore, the light will still emit in a 20'radius around the amulet/bard.