Rainbow Fluorite is a colourfully banded variety of fluorspar, made of calcium and fluorine. While fluorite is found in a variety of colours, rainbow fluorite will usually have bands of pink, purple, blue, and green throughout.
You will be buying 5 pieces of Rainbow Fluorite ranging from 7.4cm to 9cm as a bulk bundle weighing 439g at $52.68 (average $13.66 each).