Quiznetik
Gem and Jewellery Skill | Set 1
1. When Planning a rough diamond the inclusion should be Is it right to plan a rough diamond with a Inclusion in the Centre of the table
A. in the centre of culet
B. in the centre of table
C. beneath the crown facets near the girdle
D. in the kite facets
Correct : C. beneath the crown facets near the girdle
2. What is the primary aim of a computer planner
A. optinum plan to get the maximum value of the rough
B. calculate several alternative projections of shape
C. calculate several alternative projections of clarity
D. all of the above
Correct : D. all of the above
3. What precautions are to be taken by planner
A. no inclusion at the culet
B. no cavity on the crown and table
C. not sure about the inclusion go for window opening first
D. all of the above
Correct : D. all of the above
4. Why is computer rough planning done in a rough diamond?
A. to capture inclusions & blemishes
B. to capture the diamond colour
C. for removing the blemishes
D. for cutting the diamond
Correct : A. to capture inclusions & blemishes
5. PlannerCollects the bruted diamond packet from the supervisor & match the specifications of the diamonds such as…………
A. shape, size and weight & quantity
B. clarity colour weight
C. clarity colour quantity
D. shape colour weight
Correct : A. shape, size and weight & quantity
6. Planner can see plannning options based on
A. shape
B. size
C. cut
D. all of the above
Correct : D. all of the above
7. Planner observes the Diamond carefully for
A. shape / size of rough diamond
B. color of the diamond
C. inclusions
D. all of the above
Correct : D. all of the above
8. Valuation in software can be decided by
A. 4c
B. grading laboratory
C. company norms
D. all of the above
Correct : D. all of the above
9. If required natural skin or extra facet should be placed in which part of the pavillion
A. in girdle
B. on culet
C. between facets
D. between lower girdle facets
Correct : A. in girdle
10. What do you mean by Planning
A. analyzing of rough diamond for getting best polished diamond with the best clarity grade out of the rough stone.
B. analyzing of rough diamond for getting best colour with the best clarity grade out of the rough stone.
C. analyzing of rough diamond for getting best symmetry with the best clarity grade out of the rough stone.
D. analyzing of rough diamond for getting best proportions with the best colour grade out of the rough stone.
Correct : A. analyzing of rough diamond for getting best polished diamond with the best clarity grade out of the rough stone.
11. What is the importance of Planning a rough Diamond
A. manual planning
B. planning on softwares to get best yield and value
C. direct 4p
D. none of the above
Correct : B. planning on softwares to get best yield and value
12. What is the importance of Planning a rough Diamond on software
A. fast
B. more options choice
C. inlusions plotting
D. all of the above
Correct : D. all of the above
13. For computer planning the Planner has to take into consideration
A. stress
B. colour
C. coating
D. blemish
Correct : A. stress
14. Why is stress checked in a rough diamond?
A. to plan for saving loss accrdingly while cutting
B. to polish the diamond
C. to check the colour of rough diamond
D. to check the shape of rough diamond
Correct : A. to plan for saving loss accrdingly while cutting
15. Stress is seen in the diamond in which colors?
A. red
B. rainbow colors
C. green
D. blue
Correct : B. rainbow colors
16. Stress is observed in a diamond with which instrument
A. polariscope
B. 10 x eye glass
C. m-box
D. microscope
Correct : A. polariscope
17. If UV flourescence is there in a rough diamond, what will be its effect on the colour of the polished diamond
A. colour will be one grade down
B. colour will be one grade up
C. no change
D. none of the above
Correct : A. colour will be one grade down
18. Diamond flouresces in which colour under UV
A. pink
B. blue
C. orange
D. none of the above
Correct : B. blue
19. What is the work of QC operator
A. inclusions in light contrast that are are not detected by the software have to be plotted by the qc operator, manually
B. verify that the inclusions plotted by the software are correct
C. delete the inclusions that are wrongly plotted by the software
D. all of the above
Correct : D. all of the above
20. Replanning of a Diamond can be based on
A. repairs required
B. increase value
C. optimising proportions
D. all of the above
Correct : D. all of the above
21. If an inclusion is planned in the culet what will be the efect of the same
A. will reflect in all pavillion facets
B. will reflect in all kite facets
C. will reflect in all star facets
D. will reflect in all upper girdle facets facets
Correct : A. will reflect in all pavillion facets
22. What do u mean by Marking
A. the location from where the diamond has to sawed or cleaved and outlined
B. mark from a permanent marker pen
C. mark by a laser marking is made
D. all of the above
Correct : D. all of the above
23. After mapping and inclusion plotting by software what is the next process
A. inclusion qc
B. laser 4p
C. cleaving
D. remapping
Correct : A. inclusion qc
24. If a diamond needs to be cut, the planer
A. marks the sawing plane by marker
B. marks the sawing plane by laser
C. draws the marking on a diagram
D. none of the above
Correct : B. marks the sawing plane by laser
25. After Sawing the planner has to
A. replan the diamond
B. check that the earlier plan is still the optimum plan and replan if required thereafter
C. recut the diamond again
D. none of the above
Correct : B. check that the earlier plan is still the optimum plan and replan if required thereafter
26. For mapping in Sarin software how is the diamond placed?
A. thick whitener quote
B. without whitener coating
C. light whitener coating
D. none of the above
Correct : B. without whitener coating
27. After plan finalisation the planner
A. saves the plan in computer
B. takes a print out of the proposed plan and sticks on packet
C. hands packet to supervisor
D. all of the above
Correct : D. all of the above
28. Planner has to keep in mind company policy of
A. maximising yield
B. maximising clarity
C. market trends
D. all of the above
Correct : D. all of the above
29. After mapping a diamond in the planner machine
A. whitener is cleaned with acetone
B. diamond is washed
C. diamond is kept in the packet
D. none of the above
Correct : A. whitener is cleaned with acetone
30. A diamond can break if the planner does not take into considertaion
A. colour
B. coating
C. blemish
D. stress
Correct : D. stress
31. What should be the Whitner's proportion of mapping on rough diamonds
A. thick
B. thin
C. medium
D. only on half part of diamond
Correct : C. medium
32. What are the various technology available for scanning diamond through softwares
A. galaxy
B. m box
C. ig
D. all of the above
Correct : D. all of the above
33. What kind of diamond by size and value be checked by IG Technology
A. roughs with heavy inclusions
B. low color low clarity rough
C. valuable rough with less inclusions
D. small size rough
Correct : A. roughs with heavy inclusions
34. What kind of diamond by size and value be checked by Mbox Technology
A. roughs with heavy inclusions
B. valuable rough with less inclusions
C. low color low clarity rough
D. small size rough
Correct : B. valuable rough with less inclusions
35. What kind of diamond by size and value be checked by Galaxy Technology
A. small size rough
B. low color low clarity rough
C. roughs with heavy inclusions
D. valuable rough with less inclusions
Correct : C. roughs with heavy inclusions
36. Which Technology requires opening of window, for scanning a diamond
A. galaxy
B. i g technology
C. m.box
D. none of the above
Correct : C. m.box
37. The Galaxy QC and M box with IG technology are used to
A. plot the inclusions in side a rough diamond
B. no windowing is required
C. scan even heavy coated diamonds
D. all of the above
Correct : D. all of the above
38. In which diamond rough generally more trigons are found?
A. australian
B. syndicate
C. zimbabwean
D. indian
Correct : B. syndicate
39. Which countrys rough is found mostly with opaque coated layer?
A. australian
B. namibia
C. lisotho
D. sierra lone
Correct : D. sierra lone
40. The crown height of a polished diamond is ………..
A. 0.15
B. 0.16
C. 0.17
D. 0.18
Correct : C. 0.17
41. The Pavillion depth of a polished diamond is ………….
A. 0.41
B. 0.42
C. 0.43
D. 0.44
Correct : C. 0.43
42. The Table size of polished diamond is ……………………
A. 0.53
B. 0.54
C. 0.55
D. 0.56
Correct : A. 0.53
43. The Total depth of polished ……………….
A. 0.58
B. 0.59
C. 0.6
D. 0.61
Correct : A. 0.58
44. The ideal girdle thickness of a diamond should be ………………..
A. 0.09 - 1.0%
B. 1-2%
C. 2-3%
D. 3-4%
Correct : C. 2-3%
45. What is the ideal crown angle of a polished diamond…….
A. 32.5
B. 33.5
C. 34.5
D. 35.5
Correct : C. 34.5
46. How many facets are there in single cut diamond..?
A. 16
B. 17
C. 16+1
D. 17+1
Correct : C. 16+1
47. How many upper girdles are there in the Crown ?
A. 8
B. 16
C. 32
D. 12
Correct : B. 16
48. How many total facets are there in the Pavillion?
A. 24
B. 32
C. 24+1
D. 33
Correct : C. 24+1
49. What is the line that separates the top and bottom in a polished Diamond called?
A. crown
B. girdle
C. pavillion
D. culet
Correct : B. girdle
50. Which is Symmetry Features in a polished diamond
A. off centre table
B. burn mark
C. scratch
D. natural skin
Correct : A. off centre table
51. Diamond looks black when viewed from table because of
A. shallow pavillion
B. deep pavillion
C. ideal pavillion
D. strong crown
Correct : B. deep pavillion
52. Extra facet is caused by
A. bad mood
B. bad salary
C. bad pavillion depth
D. bad symmetry
Correct : D. bad symmetry
53. How many facets are there in a Double cut Diamond?
A. 57
B. 56
C. 61
D. 17
Correct : A. 57
54. Which facet is a very big in a Round Brilliant cut Diamond?
A. table
B. pavillion
C. kite
D. arrow
Correct : A. table
55. How many star facets are there in a Round Brilliant cut Diamond?
A. 24
B. 32
C. 8
D. 16
Correct : D. 16
56. How many kite facets (Bezel) are there in a Round Brilliant cut Diamond?
A. 17
B. 24
C. 32
D. 8
Correct : D. 8
57. How many uper girdle facets are there in a Round Brilliant cut Diamond?
A. 8
B. 24
C. 55
D. 16
Correct : D. 16
58. How many Arrow facets are there in a Round Brilliant cut Diamond?
A. 24
B. 8
C. 16
D. 32
Correct : B. 8
59. How many Lower girdle fecets are there in a Round Brilliant cut Diamond?
A. 24
B. 8
C. 16
D. 32
Correct : C. 16
60. Trade name for “crack’ in the diamond is
A. jhiram (fracture)
B. fungi (colorless crystal)
C. naas (dark spot)
D. dhudhak (milky)
Correct : A. jhiram (fracture)
61. What is “black spot” in the diamond..?
A. black inclusion
B. red inclusion
C. green inclusion
D. colourless inclusion
Correct : A. black inclusion
62. What is the “dark spot” in the diamond..?
A. black inclusion
B. red inclusion
C. green inclusion
D. colourless inclusion
Correct : A. black inclusion
63. What is “fungi” in the diamond ..?
A. colorlrss crystal
B. air bubble
C. vaccum
D. water
Correct : A. colorlrss crystal
64. What is the “Maccle line” the diamond ..?
A. twinning
B. graining
C. knot
D. laser
Correct : A. twinning
65. What is the “Knot” in the diamond ..?
A. diamond crystal open on surface
B. diamond crystal within diamond
C. bubble on surface
D. none of above
Correct : A. diamond crystal open on surface
66. What is “cloudy and milky” in the diamond..?
A. group of dense pinpoints within a diamond blocking light
B. cloud in diamond
C. milk in diamond
D. pinpoint in diamond
Correct : A. group of dense pinpoints within a diamond blocking light
67. Give names of the different inclusions in the diamond..?
A. jhiram
B. fungi
C. lal mati
D. all above
Correct : B. fungi
68. Which is a inclusion in a polished diamond
A. fungi
B. kori chamdi
C. ghasarka
D. lukhas
Correct : A. fungi
69. Which of the these is a hurdle in giving IF grade to a diamond
A. pin point
B. scratch
C. external twinning
D. nick
Correct : A. pin point
70. Which machine is used to weight the diamond accurately…?
A. weighing balance
B. proportion scope
C. sarin machine
D. helium machine
Correct : A. weighing balance
71. What is “VEET” ?
A. part between girdle & culet
B. part between girdle & crown
C. part between girdle & culet
D. pavillion part
Correct : C. part between girdle & culet
72. What is “CHAPKA” ?
A. a small polished facet to look inside diamond for inclusions
B. burn mark on diamond
C. pavillion facet
D. crown facet
Correct : A. a small polished facet to look inside diamond for inclusions
73. what is “NATURAL “ .?
A. natural diamond
B. part of original rough skin on poilished diamond
C. inclusion in diamond due to polishing
D. none
Correct : B. part of original rough skin on poilished diamond
74. What is the “Girdle” ?
A. part between table & culet
B. part between table & crown
C. part between crown & culet
D. part between crown & pavillion
Correct : D. part between crown & pavillion
75. Which of these is responsible for Brilliance of Diamond
A. cut
B. colour
C. clarity
D. carat
Correct : A. cut
76. When is reflection of girdle visible within the table
A. weak crown
B. shallow pavillion
C. deep pavillion
D. strong crown
Correct : B. shallow pavillion
77. Culet can also be called a………...…..facet?
A. top
B. bottom
C. right
D. mechanical
Correct : D. mechanical
78. What do you call the point where Arrow Facets Meet
A. table
B. girdle
C. culet
D. pavillion
Correct : C. culet
79. What is called as a mechanical facet
A. girdle
B. table
C. crown facet
D. culet
Correct : D. culet
80. Why Inclusion should not be there in culet
A. looks of diamond become poor
B. culet is delicate
C. fitted inside jewellery
D. affects processing of diamond
Correct : A. looks of diamond become poor
81. Culet is visible in a diamond from which facets
A. all pavillion facets
B. all crown facets
C. from girdle
D. only from table
Correct : D. only from table
82. For burning marks which fault is responsible?
A. wrong grain and high pressure
B. uneven scaife
C. faulty tang
D. excess diamond powder
Correct : A. wrong grain and high pressure
83. What is Diamond?
A. a form of carbon
B. hardest mineral on earth
C. crystallised in cubic system
D. all of above
Correct : D. all of above
84. One carat is equal to how many grams
A. 0.20 gm
B. 0.50 gm
C. 0.10 gm
D. 0.05 gm
Correct : A. 0.20 gm
85. Which eye glass is generally used to observe the diamond..?
A. 8x
B. 14x
C. 25x
D. 10x
Correct : D. 10x
86. What is the standard magnification of a Loupe
A. 10x
B. 5 x
C. 20 x
D. 15x
Correct : A. 10x
87. In what pressure diamond formed in earth?
A. 45 - 60 kbar
B. 30-40 kbar
C. 20-30 kbar
D. 10-20 kbar
Correct : A. 45 - 60 kbar
88. In what temperature diamond formed in earth?
A. 1000⁰ -1100 ⁰
B. 1100⁰ -1300 ⁰
C. 1300⁰ -1500 ⁰
D. 1500⁰ -1800 ⁰
Correct : D. 1500⁰ -1800 ⁰
89. In which type of rocks is there a possibility that Diamonds are found
A. igneous
B. metamorphic
C. kimberlite
D. sedimentary
Correct : C. kimberlite
90. In India where are Diamonds mined?
A. panna
B. hyderabad
C. golconda
D. bihar
Correct : A. panna
91. For diamond business which city is famous in Europe?
A. belgium
B. france
C. germany
D. u.k
Correct : A. belgium
92. One carat is equal to how many cents ?
A. 100
B. 1000
C. 10
D. 20
Correct : A. 100
93. How many facets are there in R.B.C cut diamond..?
A. 57
B. 58
C. 57+1 table
D. 57+ 1 culet
Correct : D. 57+ 1 culet
94. Which are well known fancy cuts ?
A. princess
B. oval
C. emerald
D. all above
Correct : D. all above
95. The diameter of R.B.C cut diamond is what %age of girdle ?
A. 0.5
B. 0.75
C. 0.45
D. 1
Correct : D. 1
96. Can we see diamond in the dark or not?
A. yes
B. no
C. sometimes
D. don’t know
Correct : B. no
97. Give the full name of R.B.C?
A. round brilliant cut
B. round brilliance cut
C. round brilliant clarity
D. round brilliant colour
Correct : A. round brilliant cut
98. Write the S.G. of Diamond.
A. 3.5
B. 3.51
C. 3.52
D. 3.54
Correct : C. 3.52
99. Write the Hardness of Diamond?
A. 7
B. 8
C. 9
D. 10
Correct : D. 10
100. The highest Clarity Grade of a diamond is
A. vvs
B. if
C. fl
D. i
Correct : C. fl