CS 9 Flashcards

1
Q

Rough that’s ground to the approximate shape of the finished stone is called

A

preforn

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2
Q

Which type of rough is usually faceted?

A

Transparent

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3
Q

To judge brilliance, view the stone

A

face-up

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4
Q

Translucent to opaque rough is often cut into a

A

Cabochon

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5
Q

Colored stones cut flat with shallow pavilions usually have areas of lower color intensity called

A

windows

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6
Q

To retain as much weight as possible from rare, high-quality rough, cutters would most likely vary

A

proportions

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7
Q

Important factors in evaluating a faceted gem’s proportions are its crown and pavilion depths and

A

the symmetry of its profile and its face-up outline

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8
Q

A carved design that projects slightly from a flat or curved surface is called a(n)

A

cameo

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9
Q

Which colored stone variety has cutting challenges due to vulnerable cleavage planes?

A

Tanzanite

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10
Q

Removing heavily included sections from gemstone rough by carefully tapping it with a small hammer is known as

A

cobbing

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11
Q

Which cutting stage has the greatest impact on the value of the finished gem?

A

preforming

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12
Q

Which is most likely to undergo cobbing?

A

Commercial-quality amethyst rough

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13
Q

When viewed face-up, a stone with more than 75 percent brilliance is considered to have

A

excellent proportions.

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14
Q

Excessive bulge on a step cut

A

adds weight

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15
Q

Cutters can darken the color of pale stones by cutting a

A

deep pavillion

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