Ruby stimulates and balances the heart chakra. Ruby protects against psychic attack and promotes positive dreams. Ruby brings abundance. It helps with awareness and concentration. Ruby helps detoxify the body and blood, supports the heart and circulatory systems, and stimulates reproductive organs and kidneys. Metaphysical properties are provided for your information and are not meant to replace the advice of a qualified physician or medical practitioner. Due to the nature of this product, color, size, and shape will vary. Small are approximately 0.25-.50" and medium are approximately 1" each.