Colored Stones GEM 220 Quiz 2
1. D. Brown: A ruby with a low number on the GIA
saturation scale would look:
A. Pink
B.White
C. Purple
D. Brown
2. C. Tourmaline: The gem species with the
largest color range:
A. Peridot
B.Tanzanite
C. Tourmaline
D. Andrite garnet
3. D. Daylight-equivalent fluorescence: For consistency, you should judge hue,
tone and saturation under what type of lighting?
A. Halogen
B.Incandescent
C. High red content
D. Daylight-equivalent fluorescence
4. D. Pale rough appear darker and more saturated: Extinction can be an
effective way to make:
A. Dark rough appear lighter
B.Pale rough appear lower in tone
C. Dark rough appear more saturated
D. Pale rough appear darker and more saturated
5. A. Hue: The first impression of a gem's basic color is called:
A. Hue
B.Tone
C. Bodycolor
D. Saturation
6. D. Compromises made by the cutter to produce economically viable gems: -
, Colored Stones GEM 220 Quiz 2
Most defects in colored stone proportions are:
A. Due to an inexperienced cutter's error
B.Only seen in a very small finished stones
C. Only seen in stones with low tone and low saturation
D. Compromises made by the cutter to produce economically viable gems
7. C. Neutrally colored: Before looking at the color of a gem, clean the stone,
and then pick it up by its girdle with tweezers and place on a background that
is:
A. Black
B.Brightly colored
C. Neutrally colored
D. The same color as your desktop
8. D. Uneven facet symmetry: A sign of a poor finish is:
A. Aligned facets
B.Sharp facet points
C. Sharp facet junctions
D. Uneven facet symmetry
9. D. They can help the cutter retain as much weight as possible: Proportion
variations are considered acceptable in rare, expensive rough because:
A. The style is considered more artistic
B.It makes the stone more identifiable
C. There are no proportion standards for that type
D. They can help the cutter retain as much weight as possible
10. A. Face up: To judge brilliance, view the stone:
A. Face up
B. In profile
C.Table-down
D. Pavilion-up
11. A. Lap: The spinning disk coated with a polishing abrasive and used
to shape facets is called a:
1. D. Brown: A ruby with a low number on the GIA
saturation scale would look:
A. Pink
B.White
C. Purple
D. Brown
2. C. Tourmaline: The gem species with the
largest color range:
A. Peridot
B.Tanzanite
C. Tourmaline
D. Andrite garnet
3. D. Daylight-equivalent fluorescence: For consistency, you should judge hue,
tone and saturation under what type of lighting?
A. Halogen
B.Incandescent
C. High red content
D. Daylight-equivalent fluorescence
4. D. Pale rough appear darker and more saturated: Extinction can be an
effective way to make:
A. Dark rough appear lighter
B.Pale rough appear lower in tone
C. Dark rough appear more saturated
D. Pale rough appear darker and more saturated
5. A. Hue: The first impression of a gem's basic color is called:
A. Hue
B.Tone
C. Bodycolor
D. Saturation
6. D. Compromises made by the cutter to produce economically viable gems: -
, Colored Stones GEM 220 Quiz 2
Most defects in colored stone proportions are:
A. Due to an inexperienced cutter's error
B.Only seen in a very small finished stones
C. Only seen in stones with low tone and low saturation
D. Compromises made by the cutter to produce economically viable gems
7. C. Neutrally colored: Before looking at the color of a gem, clean the stone,
and then pick it up by its girdle with tweezers and place on a background that
is:
A. Black
B.Brightly colored
C. Neutrally colored
D. The same color as your desktop
8. D. Uneven facet symmetry: A sign of a poor finish is:
A. Aligned facets
B.Sharp facet points
C. Sharp facet junctions
D. Uneven facet symmetry
9. D. They can help the cutter retain as much weight as possible: Proportion
variations are considered acceptable in rare, expensive rough because:
A. The style is considered more artistic
B.It makes the stone more identifiable
C. There are no proportion standards for that type
D. They can help the cutter retain as much weight as possible
10. A. Face up: To judge brilliance, view the stone:
A. Face up
B. In profile
C.Table-down
D. Pavilion-up
11. A. Lap: The spinning disk coated with a polishing abrasive and used
to shape facets is called a:
