Diamond & Diamond Grading Exam UPDATED ACTUAL Exam Questions and CORRECT Answers
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Course
Diamond & Diamond Grading
Institution
Diamond & Diamond Grading
Diamond & Diamond Grading Exam
UPDATED ACTUAL Exam Questions and
CORRECT Answers
Abrasion (Abr) - CORRECT ANSWER- A series of minute nicks along the facet
junctions of a fashioned diamond; gives the edges a white or fuzzy appearance. (Assignment
10)
Adamantine luster - CORRECT ANSWER- The h...
Diamond & Diamond Grading Exam
UPDATED ACTUAL Exam Questions and
CORRECT Answers
Abrasion (Abr) - CORRECT ANSWER✔✔- A series of minute nicks along the facet
junctions of a fashioned diamond; gives the edges a white or fuzzy appearance. (Assignment
10)
Adamantine luster - CORRECT ANSWER✔✔- The highest degree of luster possible in a
transparent material. (Assignment 8)
Aggregate - CORRECT ANSWER✔✔- A solid mass of individual, randomly oriented
crystals, intergrown or held together by a natural binding agent. (Assignment 7)
Alluvial deposit - CORRECT ANSWER✔✔- A deposit where gems are eroded from their
source rock, then transported away from the source and further concentrated. (Assignment 5)
Angle of incidence - CORRECT ANSWER✔✔- The angle at which a ray of light strikes a
surface, measured from the normal. (Assignment 8)
Angle of reflection - CORRECT ANSWER✔✔- The angle between the normal and a
reflected ray of light. (Assignment 8)
Annealing - CORRECT ANSWER✔✔- Using heat to stabilize irradiated color in gemstones.
(Assignment 12)
Appraisal - CORRECT ANSWER✔✔- An estimation of the value of an article, usually for
insurance purposes. (Assignment 1)
Average girdle diameter - CORRECT ANSWER✔✔- The result achieved by adding the
smallest and largest girdle measurements of a round brilliant and dividing by two.
(Assignment 14)
Bearded Girdle (BG) - CORRECT ANSWER✔✔- Very small feathers that extend from the
girdle surface into the stone; can result from the cutting process. (Assignment 10)
Belly - CORRECT ANSWER✔✔- The slightly curving center of the long side of a pear,
marquise, heart, or oval. (Assignment 16)
Beneficiation - CORRECT ANSWER✔✔- A commitment to reserve a portion of the
resources derived from any country for the economic development of that country.
(Assignment 3)
Best Practices Principles (BPP) - CORRECT ANSWER✔✔- De Beers' formalized
commitment of itself and its sightholders to the highest ethical standards. (Assignment 3)
Blemish - CORRECT ANSWER✔✔- Clarity characteristic that's confined to the surface of a
polished gemstone. (Assignment 10)
Block caving - CORRECT ANSWER✔✔- Underground mining that involves building a
concrete-lined tunnel under an ore deposit, then collecting the ore through openings in the
liner. (Assignment 6)
Blocking - CORRECT ANSWER✔✔- Placing the first 17 or 18 facets on a diamond.
(Assignment 9)
Bow-tie - CORRECT ANSWER✔✔- A dark area across the center of an elongated brilliant
cut. (Assignment 16)
Brick-and-mortar retailer - CORRECT ANSWER✔✔- A traditional store consisting of walls
and a fixed location. (Assignment 3)
Brightness - CORRECT ANSWER✔✔- The effect of all the diamond's internal and external
reflections of white light. (Assignment 8)
,Brilliant cut - CORRECT ANSWER✔✔- A cutting style in which triangular and kite-shaped
facets radiate from a gem's center toward its girdle. (Assignment 16)
Brillianteering - CORRECT ANSWER✔✔- Placement and polishing of the star and upper
and lower girdle facets. (Assignment 9)
Bruise (Br) - CORRECT ANSWER✔✔- A tiny area of impact accompanied by very small,
root-like feathers visible at 10X magnification; typically occurs at a facet junction.
(Assignment 10)
Bruting - CORRECT ANSWER✔✔- Forming the basic face-up outline of a diamond to
prepare it for faceting. (Assignment 9)
Bulk sampling - CORRECT ANSWER✔✔- Large-scale character sampling. (Assignment 5)
Burn Marks (Brn) - CORRECT ANSWER✔✔- Hazy surface areas that result from excessive
heat or from uneven polishing caused by structural irregularities; also called polish marks or
burned facets. (Assignment 10)
Cavity (Cv) - CORRECT ANSWER✔✔- An angular opening created when part of a feather
breaks away. (Assignment 10)
Central Selling Organisation (CSO) - CORRECT ANSWER✔✔- An agency designed to
purchase, sort, evaluate, and sell rough diamonds. (Assignment 2)
Character sampling - CORRECT ANSWER✔✔- Testing for the size, shape, clarity, and
color of the diamonds in a deposit. (Assignment 5)
Characteristic color - CORRECT ANSWER✔✔- The basic color of a fancy-colored
diamond. (Assignment 13)
, Chemical vapor deposition (CVD) - CORRECT ANSWER✔✔- An industrial process
adapted to allow growth of synthetic diamond from carbon-rich gas in thin layers onto a
silicon or diamond surface. (Assignment 19)
Chip (Ch) - CORRECT ANSWER✔✔- A shallow opening caused by damage to the stone's
surface; typically occurs at a girdle edge, facet junction, or culet. (Assignment 10)
Clarity characteristic - CORRECT ANSWER✔✔- Internal or external feature of a gemstone
that helps determine its quality and establish its identity. (Assignment 10)
Cleavage (Cl) - CORRECT ANSWER✔✔- Large, severe, straight break along a plane of
atomic weakness; considered an inclusion. (Assignment 10)
Cleavage plane - CORRECT ANSWER✔✔- Plane parallel to a possible crystal face, where a
diamond can split cleanly when struck. (Assignment 7)
Cleaver - CORRECT ANSWER✔✔- A person who cleaves, or splits, a diamond along a
cleavage plane. The cleaver might also be responsible for planning the fashioning of a
polished gem. (Assignment 9)
Cleaving - CORRECT ANSWER✔✔- Dividing a diamond into two or more pieces along a
cleavage plane. (Assignment 9)
Cloud (Cld) - CORRECT ANSWER✔✔- Many tightly grouped pinpoints that might be too
small to distinguish individually at 10X but together have a hazy appearance. (Assignment
10)
Color center - CORRECT ANSWER✔✔- Structural defect that influences an object's
absorption of light and can cause its color. (Assignment 12)
Conflict diamonds - CORRECT ANSWER✔✔- Diamonds used to finance violence and
terror. (Assignment 3)
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