Fire quartz gets its color from hematite and other iron oxides that were caught inside the stone while it formed, so no two pieces carry the same pattern.
It is a grounding stone that does not make you sleepy. The quartz keeps things clear. The iron keeps you in your body. Together they suit the kind of focus that has to hold past lunch.
A pyramid is made for a surface, not a pocket. Set it on a desk during work that keeps getting away from you, on a nightstand when your head races at night, or at the center of a grid when you want one object holding the point.
Each piece is shaped and polished into a four sided pyramid, with banding, cloudy zones and natural inclusions visible through the body of the stone. You will be sent the one intuitively chosen for you.
Put it down where your attention keeps slipping, and let it hold the spot.