|From "fluere" (Latin) to flow
|It is usually purple, but can be green, blue or yellow, or even clear. It is transparent or translucent. It can look a little like amethyst, but the surface is softer with lines from the crystals on it. Also the crystals are cubes, unlike the hexagonal quartz crystals.
These pale green crystals are cubic.
Here is a single pale blue cystal.
This specimen shows small crystals creating a larger shape.
This is an 'inside-out' crystal, with a cubic outside, and a cubic hole inside.
This specimen is cut and polished to show the pattern of purple and transparent stripes.
This natural specimen shows similar stripes, but also some yellow. It is Blue John (from "bleu jeune").
This cut and polished specimen shows purple and pale green.
This tumbled specimen is blue.
This shows the effect of light through transluscent purple fluorite.
This shows how transparent clear fluorite can be.