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GIA DIAMOND ESSENTIALS FINAL EXAM
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GIA DIAMOND ESSENTIALS FINAL EXAM
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GIA DIAMOND ESSENTIALS FINAL EXAMValue - answer- The combination of the Four C's relates primarily to
0.200 gram - answer- The metric carat equals
Facets - answer- The small, flat, polished surfaces on a finished diamond are called
- answer- Most diamonds used in jewelry are
Carbon - answer- Diamond is composed primarily of
SI1 or SI2 - answer- A diamond with "noticeable inclusions at 10X would receive which
of the following clarity grades?
Slightly included - answer- You should tell your customers that the SI designation
means
Plot - answer- A detailed map of a diamond, showing its clarity characteristics, is called
a
Extra facets on the pavilion not visible face up - answer- A diamond that's graded
Flawless might still have
Inclusions - answer- The general term for clarity characteristics within a diamond is
Natural - answer- When part of the rough crystal's original surface is left on a fashioned
diamond, it's called a
Nature - answer- One of the five factors that determine the overall effect of inclusions on
clarity is
10X - answer- The standard magnification used for clarity grading is
Clarity characteristics - answer- In describing inclusions to customers, which of the
following terms would probably be best to use?
Feather - answer- The general term for any break in a diamond is
Blemishes - answer- Clarity characteristics limited to the surface of a diamond are
called
Tone & saturation - answer- To color grade a light yellow or brown diamond, graders
compare it to a masterstone for
, H - answer- Which of the following GIA color grades indicates the greatest amount of
yellow?
- answer- The most common color of fluorescence in gem-quality diamond is
A range of color - answer- Each letter grade in the GIA Color Scale represents
D - answer- On the GIA color scale, the top grade in the normal color range is
- answer- The most commonly encountered colors among colored diamonds are
Colorless to light yellow, brown, and gray - answer- The normal color range of diamonds
is
Red & purple - answer- Which of the diamond colors listed here are the most rare?
M - answer- Most consumers can easily see color beyond
Heat - answer- Irradiated diamonds might change color when exposed to
Z - answer- Which masterstone does the GIA Laboratory use to determine the point
where a yellow diamond transitions to the colored diamond grading scale?
Depth of color - answer- The combination of tone & saturation that determines how
noticeable a color is, is known as
Rarity - answer- The price differences between colorless diamonds and near-colorless
diamonds are due primarily to
Colorless face-up - answer- When mounted, G, H, and I color diamonds can look
Heating - answer- The annealing of irradiated diamonds to stabilize their color is done
by
- answer- An unattractive gray ring under the table may be present in diamonds with
Symmetry - answer- The balance of a finished gem's cut is known as its
Bow-ties - answer- On fancy shapes such as the oval or pear, variations in the pavilion
might cause
Pavilion main facets - answer- The pavilion angel is the angle formed by the girdle plane
and the
Average girdle diameter - answer- Pavilion depth percentage is expressed as a
percentage of the
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