Refers to the angles and proportions of a diamond. Based on scientific formulas, a well-cut diamond will internally reflect light from one mirror-like facet to another.
Refers to the degree to which a diamond is colorless. Diamond color has a significant impact on its value.
Diamonds with few flaws, or inclusions, are very rare and highly valued. Inclusions may look like tiny crystals, clouds or feathers.
Refers to the weight of a diamond. Carat is often confused with size even though it is actually a measure of weight.