4Cs, Color and Inclusions

7 lessons. Practice is anonymous and stateless: results are returned for the current check and are not stored as learner history.

1. The 4Cs as a Language, Not a FormulaTime-sensitive
2. Carat, Dimensions, and Face-Up SizeStable
3. D–Z Color and FluorescenceStable
4. Clarity, Clarity Characteristics, and Grading UncertaintyStable
5. Why Diamonds Have Color and How Fancy Color Is GradedTime-sensitive
6. Fancy-Color Systems: From Yellow to BlackTime-sensitive
7. Inclusions, Defects, and What They Can ProveMonitored