Amethyst is the stone people reach for when the mind will not stop talking. It does not quiet anything on its own. It gives the restlessness a place to sit so you can hear yourself think again.
A pyramid is built to stay put, which makes it a good desk object, a good nightstand object, a good anchor for the corner of a room where the air feels busy. Set it where you make decisions. Set it where you try to sleep. Put your fingertip on the tip before a hard conversation and take one breath.
Amethyst is a purple variety of quartz, shaped and polished into a four-sided pyramid. Expect natural color banding, cloudy zones, and small internal veils. Those are part of the stone, not flaws in it.
Give it one steady place and let it hold that corner.