CDG Technology & Digital Tools 2

Question 1

Which technology does GIA's iD100 instrument use to distinguish natural diamonds from simulants and synthetics?

Accepted Answer

Spectroscopic analysis combined with luminescence testing

Answer

The GIA iD100 uses spectroscopic and luminescence analysis to screen stones and flag those requiring further testing.

Question 2

What is the primary function of Sarine Technologies' DiaExpert system in a diamond grading workflow?

Accepted Answer

Automated 4C grading using AI-driven imaging

Answer

Sarine's DiaExpert automates the measurement and grading of polished diamond cut quality using machine-vision imaging.

Question 3

FTIR spectroscopy is most valuable in diamond grading labs because it reliably identifies:

Accepted Answer

Nitrogen aggregation types (Ia, Ib, IIa, IIb) and hydrogen impurities

Answer

FTIR (Fourier-Transform Infrared) spectroscopy measures nitrogen and hydrogen absorption features that classify diamond type.

Question 4

In digital cloud-based grading platforms, what does 'chain of custody' tracking primarily protect against?

Accepted Answer

Stone substitution or misidentification between submission and return

Answer

Chain-of-custody tracking logs every handler and location change to prevent stone swaps or loss in transit through the lab.

Question 5

A grader uses DiamondView to image a stone and observes blue fluorescence with strain patterns rather than the typical orange glow. This most likely indicates:

Accepted Answer

A high-quality CVD synthetic diamond

Answer

CVD synthetics typically show blue fluorescence with characteristic strain or graining patterns under DiamondView's short-wave UV.

(CDG) Certified Diamond Grader Practice Test

(CDG) Certified Diamond Grader Practice Test

CDG Technology & Digital Tools 2