Sapphire tumbled

To the ancient and medieval world, Sapphire of heavenly blue signified the height of celestial hope and faith, and was believed to bring protection, good fortune and spiritual insight. It was a symbol of power and strength, but also of kindness and wise judgment.
In Hebrew lore, King Solomon and Abraham both wore talismans of Sapphire, and the Law given to Moses on the Mount was said to be engraved on tablets of Sapphire. 
Today Sapphire is still a Stone of Wisdom, a royal stone of learning, mental acuity and psychic activation, a seeker after spiritual truth.
Sapphire assists in healing all parts of the body and soothes insomnia. Long used as a curative for eye infections and improving eyesight, Blue Sapphire is also used to relieve headaches, fever, nosebleeds, and issues of the ears, including hearing, infection, inner-ear imbalances and vertigo.
Blue Sapphire stimulates the Throat Chakra, the voice of the body.