A window display of crystals in the Simplyb shop in Kaiapoi: a large amethyst geode, polished spheres, selenite, rose quartz and a smudge bundle on a timber table, with Williams Street visible through the glass behind

Fluorite

Fluorite is the banded crystal in purple, green and blue, sometimes all three in one piece, and it glows under UV light. We keep raw chunks, tumbles including the natural octahedral "diamond" tumbles, a 15cm tower, mini hearts and a 7.5cm heart, bead and chip bracelets, an angel carving, LED portal lamps, and fluorite as the base for chip trees. In folklore it is the stone of focus and clear thinking, which is why it is popular for desks and study. The banding is what sells it. Free pickup in Kaiapoi or NZ-wide courier.