Question 1

What is the use of vacuum in sarin machine?
A)to clean diamond
B)to release diamond
C)to hold diamond on the platform
D)to capture image of diamond

Accepted Answer

The vacuum in a sarin machine is used to hold the diamond on the platform securely during the scanning or measurement process.

Question 2

Planner has to give consideration to
A)spectrum analysis for betterweight
B)spectrum analysis for better clarity
C)spectrum analysis for better colour
D)spectrum analysis for selection of direction of the cutting and facets for better colour

Accepted Answer

Spectrum analysis is used in the planning stage of gem cutting to select the direction of the cutting and facets to enhance the color of the gemstone. This process helps in maximizing the aesthetic appeal and value of the gem by ensuring that it displays the best possible color when viewed from the top.

Question 3

Spectrum Analysis in a rough diamond needs
A)windowing
B)parallel set of windows
C)facets in many places
D)all of the above

Accepted Answer

B

Question 4

The factor of CUT gives to a diamond…………………..
A)maximum brilliance and symmetry
B)maximum clarity & colour
C)maximum weight and colour
D)all of above

Accepted Answer

The factor of CUT in a diamond primarily affects its brilliance and symmetry, determining how well the diamond reflects light.

Question 5

Which bruting process can be achieved by 4P
A)table & girdle
B)pavillion
C)crown
D)all above

Accepted Answer

The 4P (Plasma-aided high-speed Polishing Process for Precise Shaping) bruting process can be used for shaping all parts of a diamond, including the table & girdle, pavilion, and crown.

Question 6

The correct process of procesing the rough diamond is
A)polishing/sawing/cleaving/planning marking/assortment /grading
B)sawing/cleaving/polishing/assortment /planning marking/grading
C)assortment/ sawing/cleaving/planning marking/polishing/grading
D)assortment/planning marking sawing/cleaving/polishing/grading

Accepted Answer

The correct process for processing rough diamonds typically starts with assortment (sorting the diamonds based on various characteristics), followed by sawing or cleaving (cutting the diamond into rough shapes), planning marking (marking the best possible cuts), polishing (to create facets and achieve brilliance), and finally grading (evaluating the diamond based on the 4 Cs: Cut, Color, Clarity, Carat). This sequence ensures that each diamond is utilized to its fullest potential, maximizing both its aesthetic appeal and market value.

Question 7

Polariscope is used to observe which effect in Diamond
A)stress
B)colour
C)clarity
D)none of the above

Accepted Answer

Polariscope is used to observe stress in diamonds and other gemstones, helping to identify synthetic stones and treatments.

Question 8

Microcscope is used to observe diamonds for
A)inclusions
B)blemishes
C)symmetry
D)all of above

Accepted Answer

Microscopes are used to observe diamonds for inclusions (internal flaws), blemishes (surface flaws), and symmetry (the precision of the diamond's cut and alignment of its facets), making all of the options correct.

Question 9

How many faces / Points/Edges does a Cube shape have
A)faces - 6 point : 8 edges : 12
B)faces - 12 point : 6 edges : 24
C)faces - 6 point : 6 edges : 12
D)faces - 6 point : 8 edges : 24

Accepted Answer

A cube has 6 faces (each a square), 8 vertices (points where the edges meet), and 12 edges.

Question 10

How many faces / Points/Edges does a Octahedron shape have
A)faces - 12 point : 6 edges : 24
B)faces - 6 point : 6 edges : 12
C)faces - 6 point : 8 edges : 24
D)faces - 8 point : 6 edges : 12

Accepted Answer

An octahedron has 8 faces, 6 vertices (points), and 12 edges.

Question 11

How many faces / Points/Edges does a Dodecahedron shape have
A)faces - 12 point : 6 edges : 24
B)faces - 12 point : 6 + 8 edges : 24
C)faces - 6 point : 6 + 8 edges : 24
D)faces - 8 point : 6 + 8 edges : 24

Accepted Answer

A dodecahedron has 12 faces, 20 vertices (points), and 30 edges. The choice B correctly states the number of faces as 12, but the points and edges are incorrect.

Question 12

Triangular Marking on the surface of rough diamond are called as
A)trigons
B)graining
C)twinning
D)macle

Accepted Answer

Trigons are triangular etchings or markings found on the surface of rough diamonds, often indicating the crystallographic direction of the diamond.

Question 13

How many faces are there in an Octahedron Crystal
A)2
B)4
C)6
D)8

Accepted Answer

An octahedron is a polyhedron with eight faces.

Question 14

What is the shape of the Crystal faces in an Octahedron Crystal
A)rectangle
B)triangular
C)round
D)hexagonal

Accepted Answer

An octahedron crystal has eight faces, each of which is a triangle.

Question 15

How many 4 point Junctions are there in an Octahedron Crystal
A)2
B)4
C)6
D)8

Accepted Answer

An octahedron has 6 vertices, and each vertex is a 4-point junction where four edges meet.

Question 16

How many 03 point junctions are there in an Octahedron Crystal
A)0
B)2
C)4
D)6

Accepted Answer

An octahedron crystal has vertices where four edges meet, not three. Therefore, there are no 03 point junctions in an octahedron.

Question 17

How many edges are there in an Octahedron Crystal
A)4
B)8
C)12
D)16

Accepted Answer

An octahedron has 12 edges.

Question 18

How many faces are there in a cube
A)4
B)6
C)8
D)10

Accepted Answer

A cube has 6 faces. Each face is a square, and a cube has three pairs of parallel faces, making a total of 6.

Question 19

how many edges are there in a cube
A)4
B)8
C)10
D)12

Accepted Answer

A cube has 12 edges, with 4 edges on the top, 4 on the bottom, and 4 vertical edges connecting the top and bottom.

Question 20

How many 03 point junctions are there in cube
A)0
B)1
C)4
D)8

Accepted Answer

In a cube, each corner (vertex) is a point where three edges meet, making it a 3-point junction. Since a cube has 8 corners, there are 8 such junctions.

Quiz 6: Diamond Processing and Crystal Structures

What is the use of vacuum in sarin machine?

Planner has to give consideration to

Spectrum Analysis in a rough diamond needs

The factor of CUT gives to a diamond…………………..

Which bruting process can be achieved by 4P

The correct process of procesing the rough diamond is

Polariscope is used to observe which effect in Diamond

Microcscope is used to observe diamonds for

How many faces / Points/Edges does a Cube shape have

How many faces / Points/Edges does a Octahedron shape have

How many faces / Points/Edges does a Dodecahedron shape have

Triangular Marking on the surface of rough diamond are called as

How many faces are there in an Octahedron Crystal

What is the shape of the Crystal faces in an Octahedron Crystal

How many 4 point Junctions are there in an Octahedron Crystal

How many 03 point junctions are there in an Octahedron Crystal

How many edges are there in an Octahedron Crystal

How many faces are there in a cube

how many edges are there in a cube

How many 03 point junctions are there in cube