Study Questions for Sections 12, 13 & 14
Instructions: Finish answering all the questions before proceeding to the next section. Please do not look at the answers section until you have completed this section's study questions. Simply print the study question page(s) and circle the correct response letter in this multiple choice quiz.
Section 12
12.01
#1 When measuring the diameter of a diamond mounted in a full bezel you must add a small amount to compensate for the metal around the stone.
A. True
B. False
12.02
#1 When estimating depth on a diamond mounted in a closed back mounting you could rely on…
A. adding a slight amount for metal thickness.
B. the Table Reflection Method.
C. the Table Bowing Method.
#2 In a ring that has employed piggy-backing the upper diamond will be…
A. extremely flat.
B. extremely deep.
C. well proportioned.
12.03
#1 Which of the following methods would help estimate crown angles?
A. The Table Reflection Method
B. The Table Bowing Method
C. The Pavilion Main Method
#2 One potential problem with flat crown angles is…
A. additional weight loss.
B. less contrast and diversity.
C. light being reflected back inside the diamond instead of the planned escape route.
#3 The original ideal crown angles were…
A. 32 degrees
B. 34.5 degrees
C. 36.5 degrees
#4 One problem with high crown angles is…
A. additional weight loss.
B. less contrast and diversity.
C. light being reflected back inside the diamond instead of the planned escape route.
#5 Of the following choices, the best angle of dispersion is…
A. 30 degrees
B. 33 degrees
C. 29 degrees
12.04
#1 Measuring a table on a diamond in a pronged mounting will usually be very difficult.
A. True
B. False
#2 The most accurate method of measuring a table in a mounting is the…
A. Table Percentage Bowing Method
B. Plastic Table Gauge
C. Table Percentage Ratio Method
12.05
#1 In determining the girdle thickness in a bezel set diamond it might be helpful to…
A. look through the back of the diamond.
B. tilt the diamond.
C. use higher magnification.
12.06
#1 In estimating pavilion depth/angle, which of the following methods could be employed?
A. The Table Reflection Method.
B. The Table Bowing Method.
C. Either of the above.
#2 Given the following measurements/specs from a mounted round brilliant diamond, what would your assessment of the pavilion depth be?
Crown height: very flat (7%)
Average Diameter: 6.32 mm
Depth measurement: 3.93 mm
Very Thin Girdle
A. Ideal
B. Flat
C. Deep
#3 Which of the following specs could create a 61.8% depth but still be poorly proportioned?
A. An 8% crown, 2% girdle and a very deep pavilion.
B. A 20% crown, 4% girdle and a very flat pavilion.
C. Either of the above.
12.07
#1 What characteristic would allow two diamonds, with identical crowns, to have the exact same overall depth? #1 diamond with very steep pavilion angles, and #2 diamond with ideal pavilion angles.
A. Nothing. It’s not possible.
B. A very thick girdle on #2 diamond.
C. A very large culet on #1 diamond.
D. A very small table on #2 diamond.
E. B & C
F. C & D
#2 If two diamonds had matching diameters and both with 66% depths, which would likely be more brilliant? #1 with ideal pavilion angles and a very thick girdle. #2 with very steep pavilion angles and a medium girdle.
A. Neither, because the scenario is not possible.
B. #1
C. #2
12.08
#1 Which of the following described diamonds of the same color and clarity would be more likely to be of higher value?
A. 0.92 Round Brilliant; 54% table; 61.4 depth; Thin to Medium Girdle; Very Good Polish; Good Symmetry; Faint Fluorescence
B. 0.98 Round Brilliant; 64% table; 56.8 depth; Thin to Thick Girdle; Good Polish; Good Symmetry; No Fluorescence
Section13
13.01
#1 Grading clarity in a mounted diamond is consistently as accurate as grading a loose diamond with a few years of experience.
A. True
B. False
13.02
#1 Differentiating prong reflections from inclusions is easily accomplished by…
A. tilting the mounting.
B. looking through the bottom of the diamond.
C. neither.
13.03
#1 Good reasons for covering inclusions with prongs or bezels are…
A. protection from damage.
B. esthetical appearance.
C. to defraud the next buyer.
D. none of the above.
E. A & B
F. B & C
#2 When clarity grading a mounted diamond the dark field illumination is almost useless.
A. True
B. False
13.05
#1 It is always possible to locate hidden inclusions under the prongs by viewing at several different angles.
A. True
B. False
13.06
#1 The most effective method of making a fair offer on a mounted diamond is to…
A. make the offer as low as possible to protect yourself.
B. make a contingent offer based on a view of the diamond after it is taken out of mounting.
C. deduct 50% of the original seller’s appraised value.
#2 If it is agreed that a diamond can be removed from the mounting before a transaction occurs, always decide...
A. the responsible party of remounting if a transaction does not take place.
B. the responsibility of replacing a worn head that has been unavoidably damaged if a transaction does not take place.
C. what the selling price will be based on represented accuracy.
D. all of the above.
Section 14
14.01
#1 Grading color is generally an easier task than clarity grading in a mounting.
A. True
B. False
14.02
#1 Anyone should easily accomplish a 95% accuracy rate of grading color in a mounting.
A. True
B. False
14.03
#1 The very first task in grading a mounted diamond is…
A. checking the diameter.
B. cleaning it.
C. checking for fracture filling.
14.04
#1 The most effective metal (without plating) to have to grade color in is…
A. platinum.
B. yellow gold.
C. white gold.
#2 It is always helpful to attempt a view through the pavilion of a mounted diamond for the purposes of color grading.
A. True
B. False
14.05
#1 Master stones are a waste of time unless the subject diamond is loose.
A. True
B. False
14.06
#1 The general rule of thumb is to mount colorless and near colorless diamonds in…
A. 14K/18K yellow gold.
B. white gold/platinum.
C. neither of the above.
#2 In order to hide the color of an L-M graded diamond it would be advisable to mount it in…
A. 14K/18K yellow gold.
B. white gold/platinum.
C. neither of the above.
14.07
#1 The most effective method of detecting the presence of fluorescence is to view the diamond…
A. under 30x magnification.
B. under long wave ultraviolet light.
C. in direct sunlight.
D. short wave ultraviolet light.
E. none of the above.
#2 The presence of strong blue fluorescence could detract yellow from an “E” color diamond.
A. True
B. False
#3 The presence of strong blue fluorescence could give the illusion of making a “K” color look like an “H” color in the face-up position.
A. True
B. False
14.08
#1 The safest approach in buying a mounted diamond is to always make the offer…
A. after using dark field illumination.
B. contingent based on accurate representation.
C. after the diamond has been soaked in alcohol.
After completing these questions: Go to the answer sheet in the back of the course and see how you did. Remember this is part of the learning process so if your percentage was disappointing simply reread the sections that you are having difficulty with. After rereading the section and you still do not understand the material, make a note of it below for follow- up at the end of the course. We will be happy to explain the difficult topics for you before you take the final exam.
Please make notes of the subsection number and the problem you are having. Do it now so later it will not continue to haunt you.
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