GIA Diamond and Diamond Grading Exam Bundle

Improved technology. - Answer-The shift in emphasis from alluvial to primary diamond mining was due to Pipe, alluvial, and marine deposits. - Answer-African diamonds are recovered from Siberia. - Answer-Russia's significant diamond deposits are in Should be plotted on both the crown and ...

Which diamond mine's huge production influenced the world market in the late 1980s? - Answer-Argyle A commitment to reserve a portion of the resources derived from any country for the economic development of that country is called - Answer-Benefaction A city, region, or country with a large...

A loupe used for clarity grading must be corrected for chromatic and - Answer-Spherical distortion Large, high-quality diamonds are... - Answer-Graded much more thoroughly than small, low-quality ones Once diamond deposits are located, mining companies... - Answer-Must spend additional time an...

Removal of mineral-bearing ore from a surface excavation is called A. drift mining. B. open-pit mining. C. open-air mining. D. original-source mining. - Answer-open-pit mining Russia's significant diamond deposits are in A. Siberia. B. Belorussia. C. the Crimea. D. the Kalining...

One factor used to determine the clarity grade of a diamond is an inclusion's A. shape. B. texture. C. contour. D. location. - Answer-location Inclusions or blemishes that establish the clarity grade of a diamond are collectively called A. markers. B. highlighters. C. indicator c...

Eye- Visible Inclusion - Answer-visible to the unaided eye without magnification grade setting characteristics - Answer-inclusions or blemishes that establish the clarity grade of a diamond plot - Answer-a map of a diamond's inclusions, blemishes, and facet arrangement relief - Answer-co...

Exact diamond market value to a buyer - Answer-A diamond grading system provides Sells to retailers - Answer-A wholesaler is someone who Depend on the market conditions that exist when the lists are published - Answer-Diamond prices on wholesale price lists Graded much more thoroughly than ...

Where are the majority of rough diamonds cut and polished? A. Surat, India B. Tel Aviv, Israel C. Antwerp, Belgium D. New York, United States - Answer-A. Surat, India What is an upstream segment of the diamond value chain? A. Cutting and polishing B. Jewelry manufacturing C. Sorting and di...

A consistent way to communicate diamond quality - Answer-A diamond grading system provides... Sells to retailers - Answer-A wholesaler is someone who... Depend on the market conditions that exist when the lists are published - Answer-Diamonds prices on wholesale price lists Graded more thor...

What shape is a diamond's unit cell? A. Cube B. Sphere C. Pyramid D. Cylindrical - Answer-A. Cube What is the optic character of a crystal when all light rays behave identically in all directions? A. Organic B. Anisotropic C. Singly refractive D. Doubly refractive - Answer-C. Singly re...

What is the refractive index of a material with a small critical angle? A. Low B. Zero C. High D. Irrelevant - Answer-C. High What describes the separation of white light into its spectral colors? A. Brightness B. Brilliance C. Dispersion D. Scintillation - Answer-C. Dispersion What pa...

Why polish "windows" on the surface of frosted diamond rough? A. Retain weight B. View inclusions C. Improve brilliance D. Remove growth marks - Answer-B. View inclusions What improved the precision and efficiency of diamond cutting in the 1980s? A. Laser processing B. Motorized sawin...

Beneficiation - Answer-A commitment to reserve a portion of the resources derived from any country for the economic development of that country. Blemish - Answer-Clarity characteristic that's confined to the surface of a polished gemstone. Characteristic or irregularity confined to the surface...

London Diamond Syndicate - Answer-What group was critical to De Beers's early sales strategy? Color - Answer-How are gem-quality rough diamonds sorted? Baby Boomers - Answer-What generation was first to connect with diamonds as a representation of lifetime commitment? India - Answer-Wher...