Rubies have long been considered symbols of passion, protection, and power. They are associated with love and commitment as their deep red hue is reminiscent of a relationship with passion. The gem is traditionally given as a gift for 15th and 40th wedding anniversaries. Early cultures also treasured the gem as a talisman against all dangers and as a means for a peaceful life. It was also used by ancient warriors for protection in battle, under the belief that it granted invulnerability. They would even go as far as injecting the stone into their flesh as this was said to make them invincible to spears, swords, and guns.