Crystals have been prized for their beauty- and used for metaphysical purposes for centuries. They come in many colours, shapes and sizes, and they can take millions of years to form.

** I use the word crystal when describing every crystal, but the reality is that not everything is a crystal. There are: Crystals, Minerals, Rocks, Gemstones, Stones, Fossils and Tektite**

(what are crystals - The Ultimate Guide To Crystals - Rachel Hancock)