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CDG Certified Diamond Grader VIP Practice Exam
CDG — The Certified Diamond Grader (CDG) credential is awarded by the Gemological Institute of America (GIA) upon successful completion of its Diamond Grading course and examination; the exam assesses mastery of GIA's 4Cs grading methodology, diamond identification, treatment detection, and use of grading instruments.
57
Questions
120m
Time Limit
75.00%
To Pass
Question 1 of 57👑 VIP
A grader is evaluating a round brilliant diamond under standard grading conditions. The stone appears to have a slight yellowish tint when viewed face-down against a white background, and it falls just between two color grades. According to GIA protocol, which master stone should the grader reference first when assigning the final color grade?
Questions 2–57 and full explanations are VIP-exclusive.