A symbol of eternal love. A tribute to the trials of life. A subject of countless legends and beliefs. An inspiration for many works of arts. A diamond can be any of these. You might have heard the famous adage "diamonds are forever", but have you ever wondered what lies behind it? First, the word diamond itself comes from the Greek word adamas, which means indestructible. Gemologically speaking, the diamond is a king among gemstones. The hardest of all substances, the diamond is remarkably resistant to scratching, except by another diamond, and retains its brilliant shine. Do you know how old the newest diamonds on the planet are? They are an astonishing 900 million years old, so their longevity is the perfect symbol of a lifelong relationship. "Diamonds are forever simply because they last so long and can be passed down from generation to generation," says Sumarni P...