A diamond, in its rarity and beauty, is the ultimate symbol of love and fidelity. Its name is derived from the Greek adamas, meaning “unbreakable” and diaphanus, meaning “transparent.” So you may wonder how this beautiful gem came to be. Most diamonds that we see today were actually formed millions − if not billions of years ago. Composed of pure carbon (the foundational element of life), diamonds are the hardest natural substance known to man. They are formed deep within the Earth, about a 100 miles or so below the surface, in the upper mantle. The combination of intense pressure and heat below the Earth’s surface causes the growth of diamond crystals. Understanding the unbreakable nature of diamonds and how they are formed makes it clear as to why they have become the ultimate symbol of love.