Did you know that the oldest known crystal pendant is 30,000 years old and made of quartz? Or that the Greek word for crystal means ice, because ancient writers believed that mountain quartz was ice so deeply frozen it could never melt again.

And did you know that the mechanical quartz watch on your wrist works because quartz, under an electrical signal, vibrates at a precise frequency of 32,768 oscillations per second?

I've gathered all my knowledge here for you — from the history of crystals, to the properties of 58 different crystals, their hardness, which chakra and zodiac sign tradition associates them with, and what the practice we share with our customers every day has to say about them.

If you're just starting to get curious about crystals, this book will make your first step a little easier. You'll understand why some crystals cost five euros and others five hundred, and how to recognise the one that's right for you.

If you already have crystals at home, you'll find information in the book about our pieces that you perhaps haven't had gathered in one place before. The geology, the origin, the tradition — all of it together. And a few stories that might just surprise you.