Exam (elaborations)
GIA DIAMONDS AND DIAMOND GRADING 10-12
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The inclusion called bearding consists of tiny A. knots. B. needles. C. feathers. D. grain lines. - Answer-C. feathers. With darkfield illumination, light is directed into the stone from A. below. B. above. C. the side. D. all directions. - Answer-C. the side. Inclusions are...
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