Lapis Lazuli is connected to the throat chakra and thus is a stone of communication helping strengthen the conversational energy of the wearer and themselves and others.
It encourages self-awareness, acceptance, allows self-expression and reveals inner truth, providing qualities of honesty, compassion and morality to the personality. Stimulates objectivity, clarity and encourages creativity. Lapis Lazuli assists to confront and speak one's truth and inspires confidence.
This is something indigenous native Africans have known since history has been recorded, the people of ancient Kemet extracted lapis lazuli by the ton load for jewelry and would go as far as war to protect their supply.