Ruby Stone: Symbol of ardor, genuine friendship, faithfulness, prosperity, and constancy. With its understated style, our single heart-shaped ruby necklace is a piece of jewelry you can wear on special occasions and every day. It makes a thoughtful present for both you and your close ones. Your outfit will look more stylish and innovative with our necklace. Ruby is the birthstone for people born in July. look more stylish and innovative with our necklace. Ruby is the birthstone for people born in July.