Name: Score:
208 Multiple choice questions
Term 1 of 208
Which type of twinning is caused by environmental change after the gem forms
Polysynthetic
Oxidation
Contact
Idiochromatic
Term 2 of 208
Heat treatment of jadeite might produce a
black color
fine green color
brownish orange color
lavender color
Term 3 of 208
The best known feldspar species that includes moonstone is
orthoclase
centipedes
marble-hosted
Hydrothermal
,Term 4 of 208
What color is top-quality alexandrite in daylight?
yellowish green
bluish green
strongly reddish purple
light green
Term 5 of 208
Which components of a transition element's atoms can produce color in gems
ions
protons
neutrons
electrons
Term 6 of 208
The color of chrome diopside is
yellowish green
bluish green
natural
mineral
Term 7 of 208
Where was tanzanite discovered?
Russia
Chromium
Merelani
Mangari
,Term 8 of 208
a distinct change in gem color under different types of lighting, color change most common
gems
spessartine
labradorite
quartz
alexandrite
Term 9 of 208
Color-change sapphire typically changes from blue or violet to
orange
bluish green
brownish orange color
strongly reddish purple
Term 10 of 208
A snakeskin structural pattern is typical of
hydrothermal synthetic quartz.
synthetic opal.
titanium oxide
imitation lapis lazuli.
Term 11 of 208
The color of blue zircon is usually
due to irradiation
due to irradiation followed by heating
natural
due to heat treatment
, Term 12 of 208
A substance that consists of atoms of only one kind is a
Limonite
Calcium carbonate
Orthoclase
Chemicals element
Term 13 of 208
Chalcedony with curved or angular bands or layers that differ in color and transparency is
known as
marbles
hematite
iron
agate
Term 14 of 208
Which synthetic process uses an autoclave
Hydrothermal growth
Flux and hydrothermal synthetics
Flux growth
Floating zone
Term 15 of 208
Dark amethyst is lightened by
thermal
heating
cooling
cavitation
208 Multiple choice questions
Term 1 of 208
Which type of twinning is caused by environmental change after the gem forms
Polysynthetic
Oxidation
Contact
Idiochromatic
Term 2 of 208
Heat treatment of jadeite might produce a
black color
fine green color
brownish orange color
lavender color
Term 3 of 208
The best known feldspar species that includes moonstone is
orthoclase
centipedes
marble-hosted
Hydrothermal
,Term 4 of 208
What color is top-quality alexandrite in daylight?
yellowish green
bluish green
strongly reddish purple
light green
Term 5 of 208
Which components of a transition element's atoms can produce color in gems
ions
protons
neutrons
electrons
Term 6 of 208
The color of chrome diopside is
yellowish green
bluish green
natural
mineral
Term 7 of 208
Where was tanzanite discovered?
Russia
Chromium
Merelani
Mangari
,Term 8 of 208
a distinct change in gem color under different types of lighting, color change most common
gems
spessartine
labradorite
quartz
alexandrite
Term 9 of 208
Color-change sapphire typically changes from blue or violet to
orange
bluish green
brownish orange color
strongly reddish purple
Term 10 of 208
A snakeskin structural pattern is typical of
hydrothermal synthetic quartz.
synthetic opal.
titanium oxide
imitation lapis lazuli.
Term 11 of 208
The color of blue zircon is usually
due to irradiation
due to irradiation followed by heating
natural
due to heat treatment
, Term 12 of 208
A substance that consists of atoms of only one kind is a
Limonite
Calcium carbonate
Orthoclase
Chemicals element
Term 13 of 208
Chalcedony with curved or angular bands or layers that differ in color and transparency is
known as
marbles
hematite
iron
agate
Term 14 of 208
Which synthetic process uses an autoclave
Hydrothermal growth
Flux and hydrothermal synthetics
Flux growth
Floating zone
Term 15 of 208
Dark amethyst is lightened by
thermal
heating
cooling
cavitation
