Some days the overwhelm is a racing mind that won't slow down. Other days it's one specific conversation you can't stop replaying. And some days it's nothing you can point to — just a general sense of having absorbed too much. Different kinds of heavy call for different stones.
For a mind that won't stop: Amethyst
Amethyst is an absorber, traditionally associated with pulling in mental static and noise. It's the one most people reach for when the overwhelm is scattered rather than specific — too many thoughts at once, with no single source to blame.

For one heavy, specific thing: Black Obsidian
Black obsidian is more targeted. It's traditionally reached for when there's a single hard conversation or difficult moment sitting heavy, rather than a general fog of stress.

For a draining day before it starts: Black Tourmaline
Black tourmaline works more like a buffer than a release. People carry it into situations they already expect to be draining — a tense meeting, a crowded commute — as a way of softening the impact before it fully lands.

Matching the stone to the day
None of these are interchangeable once you know what each is for. A racing mind, one heavy moment, and a generally draining day are three different problems, even when they all just feel like "too much" from the inside.
Whichever kind of overwhelm you're carrying today, there's likely an absorber built for exactly that shape of heavy.