CDG Laboratory Grading Reports & Documentation Flashcards
6 cards from real CDG practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 CDG Laboratory Grading Reports & Documentation flashcards as text
Per GIA standards, which measurement sequence is recorded first for a round diamond?
Answer: Minimum diameter × maximum diameter × depth
GIA standards specify recording minimum × maximum diameter × depth for round diamonds, capturing any out-of-round deviation as part of the full dimensional profile.
A proper chain of custody document for a diamond submitted for grading must include which elements?
Answer: Date received, condition upon receipt, all handlers, and seal integrity
A proper chain of custody document must record receipt date, condition notes, all handlers, and seal integrity to protect both the laboratory and the client.
Why is it critical to record a diamond's weight to the nearest 0.001 carat in grading documentation?
Answer: To prevent weight-based fraud and provide an accurate basis for valuation
Precise weight recording prevents fraud by identifying stone switching and provides the accurate carat-weight foundation that underpins all value calculations.
What is the purpose of a 'stone brief' in laboratory grading documentation?
Answer: A preliminary written description capturing key observations before formal grading begins
A stone brief documents initial observations and preliminary findings, creating a baseline reference that graders use before completing the formal grading process.
How long should a professional diamond grading laboratory typically retain grading records in the US?
Answer: At minimum 7 years, in line with standard business record-keeping practices
Professional laboratories typically retain grading records for at least 7 years to meet standard US business record-keeping requirements and address future disputes.
When transferring a diamond between graders within the same laboratory, what documentation is required?
Answer: A signed transfer log noting the stone's identity, condition, time, and parties involved
A signed transfer log maintains an unbroken internal chain of custody with stone identity, condition, timestamp, and parties involved for accountability and liability purposes.
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