The Four Cs — color, clarity, cut, and carat weight — the key to a diamond's value.
Color, clarity, cut, and carat weight — the foundation of diamond grading.
The colorlessness scale from D (rarest) to Z.
From FL (flawless) to I3 — how inclusions affect value.
57 facets, optimal proportions, and the play of light.
1 carat = 0.2 g — how weight affects price.
The final quality factors in diamond grading.
The physical dimensions that define a diamond.
How fluorescence affects diamond appearance and value.
When a diamond looks milky, hazy, or lacks life.