GIA Diamond Essentials Practice Questions and Answers Rated A
The term "point" in reference to weight is equal to 0.01 carat
Compared to blemishes, inclusions normally have more impact on a diamond's value
An included diamond crystal that reaches the surface of a
knot (K)
cut diamond is called a
A diamond that's graded Flawless might still have extra facets on the pavilion not visible face up
When part of the rough crystal's original surface is left on
natural (N)
a fashioned diamond, it's called a
The combination of the Four C's relates primarily to value
One carat weighs 0.200 gram or 1/5 gram
The small, flat, polished surfaces on a finished diamond
facets
are called
Most diamonds used in jewelry are nearly colorless to very light yellow or light brown
Diamond is composed mostly of Carbon
Gem shapes and cutting styles other than the standard
fancy cuts
round brilliant are called
Clarity characteristics confined to the surface of a polished
blemishes
diamond are called
A gemstone's resistance to scratching is known as its hardness
On average, mine workers must process more than a ton
a half carat of diamonds
of rock to recover
The flashes of color you see in a polished diamond are
fire
called
A standard round brilliant-cut diamond has 57 or 58 facets
The term brilliant cut is used for gemstones with facets
are mostly triangular or kite-shaped
that
1/8
, GIA Diamond Essentials Practice Questions and Answers Rated A
The three major parts of a polished diamond are crown,
girdle
pavilion, and
Fracture filling can dramatically attect a diamond's apparent clarity
The most convenient and inexpensive magnifier adequate
loupe
for diamond grading is the
Bearding can result from what process? bruting
A diamond with "noticeable inclusions" at 10X would re-
SI1 or SI2
ceive which of the following clarity grades?
You should tell your customers that the SI designation
Slightly Included
means
A detailed map of a diamond, showing its clarity charac-
plot
teristics, is called a
The general term for clarity characteristics within a dia-
inclusions
mond is
The five factors that determine the overall ettect of inclu-
size, number, location (position), relief, and nature
sions on clarity are
The standard magnification used for clarity grading is 10X
In describing inclusions to customers, what term would
clarity characteristics
be probably be best to use?
The general term for any break in a diamond is feather
To color grade a light yellow or brown diamond, graders
tone & saturation
compare it to a masterstone for
The most common color of fluorescence in gem-quality
blue
diamond is
Each letter grade in the GIA Color Scale represents a range of color
On the GIA color scale, the top grade in the normal color
D
range is
2/8
The term "point" in reference to weight is equal to 0.01 carat
Compared to blemishes, inclusions normally have more impact on a diamond's value
An included diamond crystal that reaches the surface of a
knot (K)
cut diamond is called a
A diamond that's graded Flawless might still have extra facets on the pavilion not visible face up
When part of the rough crystal's original surface is left on
natural (N)
a fashioned diamond, it's called a
The combination of the Four C's relates primarily to value
One carat weighs 0.200 gram or 1/5 gram
The small, flat, polished surfaces on a finished diamond
facets
are called
Most diamonds used in jewelry are nearly colorless to very light yellow or light brown
Diamond is composed mostly of Carbon
Gem shapes and cutting styles other than the standard
fancy cuts
round brilliant are called
Clarity characteristics confined to the surface of a polished
blemishes
diamond are called
A gemstone's resistance to scratching is known as its hardness
On average, mine workers must process more than a ton
a half carat of diamonds
of rock to recover
The flashes of color you see in a polished diamond are
fire
called
A standard round brilliant-cut diamond has 57 or 58 facets
The term brilliant cut is used for gemstones with facets
are mostly triangular or kite-shaped
that
1/8
, GIA Diamond Essentials Practice Questions and Answers Rated A
The three major parts of a polished diamond are crown,
girdle
pavilion, and
Fracture filling can dramatically attect a diamond's apparent clarity
The most convenient and inexpensive magnifier adequate
loupe
for diamond grading is the
Bearding can result from what process? bruting
A diamond with "noticeable inclusions" at 10X would re-
SI1 or SI2
ceive which of the following clarity grades?
You should tell your customers that the SI designation
Slightly Included
means
A detailed map of a diamond, showing its clarity charac-
plot
teristics, is called a
The general term for clarity characteristics within a dia-
inclusions
mond is
The five factors that determine the overall ettect of inclu-
size, number, location (position), relief, and nature
sions on clarity are
The standard magnification used for clarity grading is 10X
In describing inclusions to customers, what term would
clarity characteristics
be probably be best to use?
The general term for any break in a diamond is feather
To color grade a light yellow or brown diamond, graders
tone & saturation
compare it to a masterstone for
The most common color of fluorescence in gem-quality
blue
diamond is
Each letter grade in the GIA Color Scale represents a range of color
On the GIA color scale, the top grade in the normal color
D
range is
2/8
