Fluorite?

Card	Fluorite
Set	Gemstones
Edition	Unlimited
Book value	Est. 12 to 29 Credits once graded
Checklist	31 / 86
Rarity	Common
Owned	2

Fluorite

Fluorite comes in more colours than almost any other mineral, sometimes several at once in bands within a single crystal, and it gave its name to the word fluorescence after scientists noticed how strongly it glowed under UV light.