Trying to select the perfect gemstone for that special relationship in your life? You can't go wrong with either a diamond or a white sapphire. Here's an overview of the two stones: Diamonds are the priciest stones of them all and have the classic sparkle that everyone loves. On the other hand, white sapphires offer a similar, beautiful glimmer but they're cheaper than diamonds. Both of them are great options for jewelry because they look amazing and are very durable.