Name: Score:
61 Multiple choice questions
Definition 1 of 61
An area of weak saturation in a transparent gemstone's bodycolor that usually results from the
way the gem was cut.
mineral
extinction
window
group
Definition 2 of 61
an unusual optical effect displayed by a gem
play-of-color
Chatoyancy
Inorganic
phenomenon
Definition 3 of 61
the appearance of a materials surface in reflected light
Luster
Dispersion
orient
hue
,Definition 4 of 61
A broad flash of color in labradorite feldspar that disappears when the gem is moved.
milk and honey
Labradorescence
Fluorescence
Color zoning
Definition 5 of 61
How well a gemstone resists breaking and chipping and cracking
Luster
organic
trace elements
toughness
Definition 6 of 61
The flashing rainbow colors in opal.
color range
play-of-color
what does color require
amorphous
Definition 7 of 61
The color or colors in a gemstone's color range considered by the trade to be the most
desirable.
adularescence
Dispersion
Fine color
bodycolor
,Definition 8 of 61
A gemstone's ability to withstand wear, heat, and chemicals.
stability
natural gems
transparency
durability
Definition 9 of 61
kinds and relative quantities of atoms that make up a material
natural gems
what does color require
chemical composition
chemical formula
Definition 10 of 61
A distinct change in gem color under different types of lighting.
Color zoning
Fluorescence
color change
color range
, Definition 11 of 61
A subcategory of species, based on color, transparency, or phenomenon. for example when
corundum had trace elements of chromium and is red it is a ruby and when it has trace
elements of iron and titanium it is a blue sapphire
Gem variety
lab-grown gem
Chatoyancy
Aventurescence
Definition 12 of 61
the separation of light into spectral colors
Hardness
Dispersion
play-of-color
Saturation
Definition 13 of 61
color, symmetry, luster, and transparency
what causes blue in sapphire?
what features help classify gems?
quartz chemical formula
main elements of beauty in gemology
61 Multiple choice questions
Definition 1 of 61
An area of weak saturation in a transparent gemstone's bodycolor that usually results from the
way the gem was cut.
mineral
extinction
window
group
Definition 2 of 61
an unusual optical effect displayed by a gem
play-of-color
Chatoyancy
Inorganic
phenomenon
Definition 3 of 61
the appearance of a materials surface in reflected light
Luster
Dispersion
orient
hue
,Definition 4 of 61
A broad flash of color in labradorite feldspar that disappears when the gem is moved.
milk and honey
Labradorescence
Fluorescence
Color zoning
Definition 5 of 61
How well a gemstone resists breaking and chipping and cracking
Luster
organic
trace elements
toughness
Definition 6 of 61
The flashing rainbow colors in opal.
color range
play-of-color
what does color require
amorphous
Definition 7 of 61
The color or colors in a gemstone's color range considered by the trade to be the most
desirable.
adularescence
Dispersion
Fine color
bodycolor
,Definition 8 of 61
A gemstone's ability to withstand wear, heat, and chemicals.
stability
natural gems
transparency
durability
Definition 9 of 61
kinds and relative quantities of atoms that make up a material
natural gems
what does color require
chemical composition
chemical formula
Definition 10 of 61
A distinct change in gem color under different types of lighting.
Color zoning
Fluorescence
color change
color range
, Definition 11 of 61
A subcategory of species, based on color, transparency, or phenomenon. for example when
corundum had trace elements of chromium and is red it is a ruby and when it has trace
elements of iron and titanium it is a blue sapphire
Gem variety
lab-grown gem
Chatoyancy
Aventurescence
Definition 12 of 61
the separation of light into spectral colors
Hardness
Dispersion
play-of-color
Saturation
Definition 13 of 61
color, symmetry, luster, and transparency
what causes blue in sapphire?
what features help classify gems?
quartz chemical formula
main elements of beauty in gemology
