- Ruby is a fiery and captivating stone. It is known to be the stone of nobility and considered as the queen of stones and the stone of kings. It is believed to be a stone of passion, protection and prosperity. Ancient cultures believed it symbolises the sun and that its glowing hue suggests an inextinguishable flame that legends claim would shine through even the thickest of clothing and could not be hidden. It is said to warn the wearer of impending danger and to banish sadness and foolish thoughts. It has a reputation to bring peace to its owner. -