Crystal Properties
I have written an e-book with short, 1 paragraph descriptions of the key properties of each of the crystals that I work with. This book is based on The Crystal Bible by Judy Hall with technical improvements from the MinDat website. I have added my own experiences from working with people and the stones and I have added some Tikanga and Maoritanga around New Zealand stones. You can download the book here:
Crystillery Crystal Properties e-Book