Sugilite
https://www.crystalvaults.com/crystal-encyclopedia/sugilite
http://www.healing-crystals-for-you.com/sugilite.html
Sugilite is associated with Archangel Michael, the great protector and spiritual warrior, as well as to Archangels Uriel and Zadkiel.
Name of guardian angel:
April 26-30
| Amethyst | Cahatel |
Cahetel Angel
https://guardianangelguide.com/guardian-angel-cahetel/