Crystal & Sound : Enjoy the Subtle Effects of Rock Crystals Combined with Crystal Singing Bowls Hardcover – Audiobook Book & CD by Tosca Tetteroo Most people are familiar, one way or another, with rock crystal or quartz, if only in its polished form as decoration or jewelry. Since ancient times, the sparkling clarity of this stone has had a very special allure to people all over the world. Nowadays, even though things are changing at an impossible pace, the age-old crystal still appeals to us because of its outer beauty and its great energetic powers. If we open ourselves up to this power, beautiful things can happen. This is what Crystal & Sound is about, and you can experience it yourself by listening to the recordings of crystal singing bowls on the accompanying CD. Language ‏ : ‎ English Hardcover ‏ : ‎ 54 pages Dimensions : 136 x 142 x 11mm  About the Author Tosca Tetteroo has been working as a crystal healer and gem therapist for over 25 years.