GIA Diamonds and Diamond Grading: Assignment 6 Questionnaire With 100% Correct Answers

How is luminescence important for diamond identification? A. Indicates geographic origin B. Reveals presence of defects C. Confirms superdeep formation D. Separates pink from red diamonds - Correct Answer B. Reveals presence of defects How does light travel? A. Waves B. Bursts C. Right angles D. Curves - Correct Answer A. Waves What describes the distance between two high points of a light path? A. Node B. Radius C. Velocity D. Wavelength - Correct Answer D. Wavelength What is the main cause of color in diamond? A. Defects B. Cut style C. Diffraction D. Selective reflection - Correct Answer A. Defects What type of defect causes color in white diamonds? A. Line B. Point C. Volume D. Intrinsic - Correct Answer C. Volume What does irradiation create when it displaces carbon atoms in the crystal lattice? A. Feathers B. Graining C. Vacancies D. N3 defects - Correct Answer C. Vacancies What instrument allows one to see an absorption spectrum? A. Spectroscope B. Refractometer