Having completed my Crystal Healing Practitioner Course, I have been exploring both websites and books with respect to the metaphysical properties of gemstones and crystals. Below is a list that I have been able to compile. 

As you explore the links below to delve further into the realm of books and the knowledge they contain, just remember to hit the BACK button after each foray, ESPECIALLY IF THE LINK DOES NOT OPEN IN A NEW WEB WINDOW, so that you are able to return with relative ease. 

The Crystal Ally Cards: The Crystal Path to Self Knowledge by Naisha Ahsian
This book is available at both Amazon (US) and Amazon (CDA).

Crystal Balls and Crystal Bowls: Tools for Ancient Scrying and Modern Seership by Ted Andrews
This book is available at both Amazon (US) and Amazon (CDA).

Crystal Healing Secrets: Enhance Your Relationships, Sexuality, Prosperity, and Health by Brett Bravo
This book is available at both Amazon (US) and Amazon (CDA).

American Indian Secrets of Crystal Healing by Luc Bourgault
This book is available at both Amazon (US) and Amazon (CDA).

Healing With Gemstones by Pamela Chase and Jonathan Pawlik
This book is available at both Amazon (US) and Amazon (CDA).

Healing With Crystals by Pamela Chase and Jonathan Pawlik
This book is available at both Amazon (US) and Amazon (CDA).

Healing with Crystals and Gemstones by Daya Sarai Chocron
This book is available at both Amazon (US) and Amazon (CDA).

Crystal Enchantments – A Complete Guide to Stones and Their Magical Properties by D. J. Conway
This book is available at both Amazon (US) and Amazon (CDA).

Laying on of Stones by D. J. Conway
This book is available at both Amazon (US) and Amazon (CDA).

Aura-Soma: Healing Through Color, Plant and Crystal Energy
by Irene Dalichow, Joan M. Burnham and Mike Booth
This book is available at both Amazon (US) and Amazon (CDA).

Colors and Crystals – A Journey Through the Chakras by Joy Gardner-Gordon
This book is available at both Amazon (US) and Amazon (CDA).

Crystal Power, Crystal Healing – The Complete Handbook by Michael Geinger
This book is available at both Amazon (US) and Amazon (CDA).

Healing Crystals: The A-Z Guide to 430 Gemstones by Michael Geinger
This book is available at both Amazon (US) and Amazon (CDA).

Crystal Massage for Health and Healing by Michael Geinger
This book is available at both Amazon (US) and Amazon (CDA).

Crystal Healing: The Ancient Tradition: The Therapeutic Power, Magic and Mystery of Gems, Stones and Crystals by Michael Geinger
This book is available at both Amazon (US) and Amazon (CDA).

The Healing Crystals First Aid Manual: A Practical A to Z of Common Ailments and Illnesses and How They Can best Be Treated with Crystal Therapy by Michael Geinger
This book is available at both Amazon (US) and Amazon (CDA).

The Illustrated Guide to Crystals by Judy Hall
This book is available at both Amazon (US) and Amazon (CDA).

The Crystal Bible: A Definitive Guide to Crystals by Judy Hall
This book is available at both Amazon (US) and Amazon (CDA).

Crystal User’s Handbook: An Illustrated Guide by Judy Hall
This book is available at both Amazon (US) and Amazon (CDA).

The Crystal Wisdom Kit by Stephanie Harrison and Barbara Kleiner
This book is available at both Amazon (US) and Amazon (CDA).

Exploring Scrying: How to Divine the Future and Make the Most of It by Ambrose Hawk
This book is available at both Amazon (US) and Amazon (CDA).

The Mystical Crystal – Expanding Your Crystal Consciousness by Geoffrey Keyte
This book is available at both Amazon (US) and Amazon (CDA).

Gem Magic: Crystals and Gemstones for Love, Luck, and Power by Brenda Knight
This book is available at both Amazon (US) and Amazon (CDA).

Pocket Guide to Crystals and Gemstones by Sirona Knight
This book is available at both Amazon (US) and Amazon (CDA).

Reiki with Gemstones – Activating Your Self-Healing Powers Connecting the Universal Life Force Energy with Gemstone Therapy
by Ursula Klinger-Omenka
This book is available at both Amazon (US) and Amazon (CDA).

Gemstone Feng Shui by Sandra Kynes
This book is available at both Amazon (US) and Amazon (CDA).

Crystal Decoder by Sue Lilly
This book is available at both Amazon (US) and Amazon (CDA).

Crystal Healing – Using The Power of Crystals for Health and Harmony by Simon Lilly
This book is available at both Amazon (US) and Amazon (CDA).

Illustrated Elements of Crystal Healing by Simon Lilly
This book is available at both Amazon (US) and Amazon (CDA).

Aora Gemstone Oracle: Cards to Explore the Crystal Realms by James McKeon and Noreen Levi
This book is available at both Amazon (US) and Amazon (CDA).

Stone Power by Dorothee Mella
This book is available at both Amazon (US) and Amazon (CDA).

Love Is In the Earth – A Kaleidoscope of Crystals by Melody
This book is available at both Amazon (US) and Amazon (CDA).

Love Is In the Earth – A Kaleidoscopic Pictorial Supplement A by Melody
This book is available at both Amazon (US) and Amazon (CDA).

Love Is In the Earth – Laying On of Stones by Melody
This book is available at both Amazon (US) and Amazon (CDA).

Love Is in the Earth: Kaleidoscopic Pictorial Supplement Z by Melody
This book is available at both Amazon (US) and Amazon (CDA).

Love Is in the Earth – Mineralogical Pictorial: Treasures of the Earth by Melody
This book is available at both Amazon (US) and Amazon (CDA).

Crystal Healing – Applying the Therapeutic Properties of Crystals and Stones
(Book 1) by Katrina Raphaell
This book is available at both Amazon (US) and Amazon (CDA).

Crystal Enlightenment – The Transforming Properties of Crystals and Healing Stones
(Book 2) by Katrina Raphaell
This book is available at both Amazon (US) and Amazon (CDA).

The Crystalline Transmission: A Synthesis of Light
(Book 3) by Katrina Raphaell
This book is available at both Amazon (US) and Amazon (CDA).

Encyclopedia of Rocks, Minerals, and Gemstones by Henry Russell and Chris Pellant
This book is available at both Amazon (US) and Amazon (CDA).

The Crystal Healer: A Guide to Understanding Crystals and Their Healing Gifts by Marianna Sheldrake
This book is available at both Amazon (US) and Amazon (CDA).

Moldavite: Starborn Stone of Transformation by Robert Simmons and Kathy Warner
This book is available at both Amazon (US) and Amazon (CDA).

The Book of Stones: Who They Are & What They Teach by Robert Simmons and Naisha Ahsian
This book is available at both Amazon (US) and Amazon (CDA).

The Book of Crystal Healing by Liz Simpson and Leslie Kenton
This book is available at both Amazon (US) and Amazon (CDA).

Crystal Ball Gazin’ by Uma Silbey
This book is available at both Amazon (US) and Amazon (CDA).

The Essence of Gemstones by Renate Sperling
This book is available at both Amazon (US) and Amazon (CDA).

Healing with Gemstones and Crystals by Diane Stein
This book is available at both Amazon (US) and Amazon (CDA).

The Women’s Book of Healing: Crystals and Gemstones, Aura’s and Laying on of Hands, Chakras and Colors
by Diane Stein
This book is available at both Amazon (US) and Amazon (CDA).

All Women Are Healers – A Comprehensive Guide to Natural Healing by Diane Stein
This book is available at both Amazon (US) and Amazon (CDA).

Psychic Healing with Spirit Guides and Angels by Diane Stein
This book is available at both Amazon (US) and Amazon (CDA).

Crystal & Gem by R. F. Symes and R. R. Harding
This book is available at both Amazon (US) and Amazon (CDA).

Stones Alive! A Reference Guide to Stones for the New Millennium : From Their Hearts to Our Hands, New Uses and Applications
by Marilyn Twintreess and Thomas Twintreess
This book is available at both Amazon (US) and Amazon (CDA).