Kyanite relieves pain, lowers blood pressure - but you know, the color blue cools. The color blue is the color of the throat chakra, so it has a positive effect on the thyroid gland and its parathyroid glands, as well as the vocal cords, tonsils and everything in the throat. Those who talk a lot, and it's not just us women, help protect the organs of speech. And not only you.