DCA Certification Standards & Documentation 3

Question 1

Which grading laboratory is known for using a 0–10 numerical scale to grade diamond cut quality, where 0 is ideal?

Accepted Answer

AGS Laboratories

Answer

AGS Laboratories uses a proprietary 0–10 scale for grading cut, color, and clarity, where 0 represents the highest quality (Ideal cut).

Question 2

What is the primary purpose of chain-of-custody documentation in the diamond trade?

Accepted Answer

To verify a diamond is conflict-free and legally sourced

Answer

Chain-of-custody documentation traces a diamond's path from mine to market, ensuring it is conflict-free and compliant with the Kimberley Process Certification Scheme.

Question 3

A diamond grading report describes a stone's color as 'G.' According to GIA's scale, how would this color best be described?

Accepted Answer

Near colorless

Answer

G-color falls in the 'Near Colorless' range (G–J) on the GIA color grading scale, just below the Colorless range of D–F.

Question 4

Which document accompanies Kimberley Process Certified rough diamonds as they cross international borders?

Accepted Answer

A Kimberley Process Certificate

Answer

The Kimberley Process Certificate is the government-issued document that must accompany rough diamond shipments to certify they are not conflict diamonds.

Question 5

What does 'treatment disclosure' on a diamond grading report indicate?

Accepted Answer

The diamond has undergone a process to alter its appearance

Answer

Treatment disclosure notifies the buyer that the diamond has been subjected to processes such as laser drilling, fracture filling, or HPHT treatment to enhance its appearance.

(DCA) Certified Diamond Council of America Diamond Specialist Practice Test

(DCA) Certified Diamond Council of America Diamond Specialist Practice Test

DCA Certification Standards & Documentation 3