Welcome to GEMFormulas!  Your trusted source for therapeutic gemstones and diamonds.

Southwestern United States



Robyn Arrington Machney, MSW, MA
Certified Gemstone Therapy Practitioner
Currently in training to become a Diamond Therapy Associate Practitioner

Santa Fe, New Mexico
Email: robyngemstones@gmail.com

  • Accepts in-person clients.
  • Accepts remote Gemstone Therapy clients.
  • Available to evaluate your main color ray in person or by phone and can help you select the best therapeutic gemstone necklaces for your individual needs.

“I began collecting and learning about crystals and their healing properties at age 12. I began intensive studies in consciousness and meditation at age 17.  However, I did not find a gemstone modality that resonated with me completely until I was introduced to Isabelle Morton and GEMFormulas in 2010. What a joy to discover so many gemstones and such a broad array of healing techniques and protocols! Now I work with the gemstones and experience the effectiveness of gemstone therapy every day, while I continue to explore the gemstone missions and our planetary evolution.”



Marjorie Hill
Certified Gemstone Therapy Practitioner

Prescott, Arizona
Email: mphindigo@yahoo.com

  • Accepts in-person clients for Gemstone and Diamond Therapy.
  • Accepts remote Gemstone Therapy clients.
  • Available to evaluate your main color ray in person or by phone and can help you select the best therapeutic gemstone necklaces for your individual needs.


Stephanie O’Dell
Certified Gemstone Therapy Practitioner

Phoenix and Verde Valley, Arizona
Email: stephanie@zen-gems.com
Phone: 602-703-3290

  • Accepting new clients in Phoenix and the Verde Valley (near Sedona), Arizona.
  • Available for mentoring Foundation Students, who are studying to take their open book exam.
  • Available for mentoring gemstone therapy interns, who are preparing for their final oral exam.
  • Available for presenting talks, workshops and/or PowerPoint presentations on gemstone therapy to your group.
  • Available to evaluate your main color ray in person or by phone.
  • Available to help select the best therapeutic gemstones for your individual needs.

“As my interest in gemstones was developing, I read Isabelle’s original discourses on the gemstones’ missions. Thanks to Isabelle founding GEMFormulas and the Gemstone Therapy Institute, gemstone energy medicine has become revolutionized! As my deep passion for the gemstones grew, and over 20 years of studying the therapeutic benefits of gemstones in a spherical form, it has brought me to where I am today as a Certified Gemstone Therapy Practitioner of this amazing modality. While gemstone therapy works at a deeper level of one’s being and provides the energetic support, combining my experience as a certified lifestyle educator, life coach and Zen Shiatsu bodyworker, it has enhanced my talent as a gemstone therapist. I now work with a greater knowledge of the body’s higher intelligence on energetic causes of imbalances, balancing the five elements, the chakras and color ray spectrums, and/or other gemstone protocols as called for in a therapy session.”



Harriet Olmstead
Certified Gemstone Therapy Practitioner

Phoenix, Arizona

  • Accepts in-person clients.
  • Accepts remote Gemstone Therapy clients.
  • Available to evaluate your main color ray in person or by phone and can help you select the best therapeutic gemstone necklaces for your individual needs.

Gary Wright
Certified Gemstone Therapy Practitioner

Prescott, Arizona
Email: gearlwright@yahoo.com

  • Accepts in-person clients for Gemstone and Diamond Therapy.
  • Accepts remote Gemstone Therapy clients.
  • Available to evaluate your main color ray in person or by phone and can help you select the best therapeutic gemstone necklaces for your individual needs.

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