Natural diamonds have inclusions, marks that are often invisible to the naked eye. Under a jeweler's magnifying loupe they can look like crystals, tiny rivers, or clouds, and they affect the diamond's brilliance and value. In the Amazon collection, even diamonds of lower clarity grades are selected for their natural brilliance.

n nature, most diamonds have a yellowish or brown tint and only the rarest diamonds are colorless. Diamonds are graded for color using a scale that ranges from D (colorless) to Z, which is visibly yellow. The more colorless a diamonds is, the more costly it will be. Amazon Collection uses diamonds graded D to L on the color scale.