This is labradorite, a feldspar, from Madagascar, and everything it has to give comes with that turn. Straight on, it is a quiet grey stone. Tilt it and the colour comes all at once, seeming to rise from inside rather than sit on the surface, then goes out again at the next small movement. Collectors call this labradorescence, and they look for flash that comes in broad sheets rather than scattered sparks. Here it comes in sheets.
Each face keeps its light in a different place. On one, the fire sits high, where blue melts into gold beneath a top edge shaped like a low ridge. On the other, the blue lies deep and low, under that gold-edged seam that runs across it like a shoreline. The dark inclusions and the fine crackle are the stone's own weather, and the colour seems to move behind them.
In crystal traditions, labradorite has long been called a stone of thresholds, said to guard the energy of the one who keeps it and to wake intuition. The old advice is simple: keep it where the light can find it.
