Gia Diamond And Diamond Grading Final Study Guide Questions And Correct Answers

What was the earliest diamond simulant? {Ans: Foilbakcs}What did cutters apply the modern brilliant cut to fancy shapes? {Ans: to maximize profit from oddly shaped or off color}What is required to produce CVD lab-grown diamonds? {Ans: Carbon gas, hydrogen gas, substrate, energy, and heat}What is an example of a superdeep diamond? {Ans: Juina}What do appraisers assign to larger mounted diamonds when clarity grading? {Ans: A single grade}What defect is the primary cause of orange color in diamonds? {Ans: Higher concentrations of isolated nitrogen impurities}