Florida beaches like Siesta are famed for their white, powdery ... It is almost 100 percent pure quartz crystal, with each grain of nearly identical size. Its chemical composition — silicon ...

The rock crystals were likely brought to ... several of the crystal fragments are prismatic, splitting white light into a visible rainbow spectrum. Quartz crystal is also triboluminescent ...

The secret is in the structure of the quartz, Voisey explains. Quartz is the only abundant mineral whose crystals lack a centre of symmetry. This means that when these crystals are distorted or ...