GIA Diamonds and Diamond Grading 10-12
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questions with correct answers
| | |
The |inclusion |called |bearding |consists |of |tiny
A.
knots.
B.
needles.
C.
feathers.
D.
grain |lines. |- |C.
feathers.
With |darkfield |illumination, |light |is |directed |into |the |stone |from
A.
below.
B.
above.
C.
the |side.
D.
all |directions. |- |C.
the |side.
Inclusions |are |easier |to |see |using
A.
,ultraviolet |light.
B.
darkfield |illumination.
C.
overhead |spot |lighting.
D.
overhead |fluorescent |lighting. |- |B.
darkfield |illumination.
A |solid |mineral |body |enclosed |within |a |diamond |(or |other |gem) |is
A.
a |knot.
B.
a |natural.
C.
internal |graining.
D.
an |included |crystal. |- |D.
an |included |crystal.
Trigons |are
A.
drag |lines.
B.
color |centers.
C.
growth |marks.
D.
twinning |planes. |- |C.
, growth |marks.
An |included |diamond |crystal |that |extends |to |the |surface |of |a |fashioned |diamond |is |called |a
A.
pit.
B.
chip.
C.
knot.
D.
laser |drill-hole. |- |C.
knot.
An |example |of |a |blemish |is |a
A.
chip.
B.
knot.
C.
bruise.
D.
natural. |- |D.
natural.
A |term |used |to |describe |any |break |within |a |diamond |is
A.
chip.
B.
bruise.
| | | | | |
questions with correct answers
| | |
The |inclusion |called |bearding |consists |of |tiny
A.
knots.
B.
needles.
C.
feathers.
D.
grain |lines. |- |C.
feathers.
With |darkfield |illumination, |light |is |directed |into |the |stone |from
A.
below.
B.
above.
C.
the |side.
D.
all |directions. |- |C.
the |side.
Inclusions |are |easier |to |see |using
A.
,ultraviolet |light.
B.
darkfield |illumination.
C.
overhead |spot |lighting.
D.
overhead |fluorescent |lighting. |- |B.
darkfield |illumination.
A |solid |mineral |body |enclosed |within |a |diamond |(or |other |gem) |is
A.
a |knot.
B.
a |natural.
C.
internal |graining.
D.
an |included |crystal. |- |D.
an |included |crystal.
Trigons |are
A.
drag |lines.
B.
color |centers.
C.
growth |marks.
D.
twinning |planes. |- |C.
, growth |marks.
An |included |diamond |crystal |that |extends |to |the |surface |of |a |fashioned |diamond |is |called |a
A.
pit.
B.
chip.
C.
knot.
D.
laser |drill-hole. |- |C.
knot.
An |example |of |a |blemish |is |a
A.
chip.
B.
knot.
C.
bruise.
D.
natural. |- |D.
natural.
A |term |used |to |describe |any |break |within |a |diamond |is
A.
chip.
B.
bruise.
