Considered a stone of strength, willpower, and discipline. The green varieties stimulate these traits directly from the heart. Its able to soothe one's heart, bringing one to a calm emotional state. In bringing one to this state, it allows for a still mind so that one may call upon their inner endurance and persistence, making both self-mastery and dreadful tasks feel like a breeze.

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This stone can be found in: Mexico, Argentina, Brazil, China, Iran, Pakistan y Turkey.