GIA Colored Stone Final EXAM, SOLUTIONS A+
GRADED 100% VERIFIED) LATEST VERSION 2025!!
By what date had Kokichi Mikimoto begun culturing whole pearls -
(ANSWER)1908
Synthetic gem materials - (ANSWER)Are not minerals
which of the following is an organic gem - (ANSWER)amber
which of the following is amorphous - (ANSWER)amber
a natural material that's made up of a mass of one or more kinds of mineral
crystals is - (ANSWER)rock
what group does alamandine belong to - (ANSWER)garnet
A gem produced by, or derived from, a living organism is - (ANSWER)organic
which of the following is a gem variety - (ANSWER)demantoid
the world's largest gem-consuming market is - (ANSWER)the US
,a substance that consists of atoms of only one kind is a - (ANSWER)chemical
element
Media attention in the 1990s regarding its treatment reduced consumer
confidence in - (ANSWER)emerald
a natural, inorganic substance with a characteristic chemical composition and
usual crystal structure is a - (ANSWER)mineral
most gems are - (ANSWER)minerals
To be a gem, a mineral must be beautiful, durable, and - (ANSWER)rare
a broad gem category based on chemical composition and crystal structure is
called a - (ANSWER)gem species
Many colored stones are mined by - (ANSWER)independent miners using small-
scale mining methods.
Rocks altered by heat and pressure beneath Earth's surface are -
(ANSWER)metamorphic
Which type of deposit is usually the most profitable for colored stone mining? -
(ANSWER)secondary
,Which gem can crystallize in volcanic rock from gasses released by magma? -
(ANSWER)red beryl
Emeralds are rarely found in placer deposits because they're - (ANSWER)unable
to withstand much abrasion
Which is a workable alluvial deposit of gem minerals with economic potential? -
(ANSWER)placers
Which is a deposit where gems eroded from the source rock and remained in
place nearby? - (ANSWER)eluvial
from granite, pegmatite gems get exotic elements like - (ANSWER)beryllium,
boron, and lithium
Myanmar's famous Mogok ruby deposits were formed by -
(ANSWER)metamorphic process
most of the gems in tanzania's umba river valley are formed in - (ANSWER)placer
deposits
A deposit where gems are found in the rock that where they formed is called -
(ANSWER)primary deposit
, Which is a key locality for hydrothermal gems? - (ANSWER)Ouro Preto, Brazil
Heat and pressure transform limestone into - (ANSWER)marble
which gem form by metamophosis - (ANSWER)tanzanite
Most gemstones form in the - (ANSWER)continental crust
kunzite is most often associated with - (ANSWER)tourmaline and beryl in
pegmatites
how heavy an object is in relation to its size - (ANSWER)density
A two-phase inclusion is a cavity in a gem that's typically filled with a -
(ANSWER)liquid and a gas
which type of twinning is caused by environmental change after a gem forms -
(ANSWER)polysynthetic
which element caused red in ruby and green in emerald - (ANSWER)chromium
A unit cell defines a mineral's - (ANSWER)basic identity
GRADED 100% VERIFIED) LATEST VERSION 2025!!
By what date had Kokichi Mikimoto begun culturing whole pearls -
(ANSWER)1908
Synthetic gem materials - (ANSWER)Are not minerals
which of the following is an organic gem - (ANSWER)amber
which of the following is amorphous - (ANSWER)amber
a natural material that's made up of a mass of one or more kinds of mineral
crystals is - (ANSWER)rock
what group does alamandine belong to - (ANSWER)garnet
A gem produced by, or derived from, a living organism is - (ANSWER)organic
which of the following is a gem variety - (ANSWER)demantoid
the world's largest gem-consuming market is - (ANSWER)the US
,a substance that consists of atoms of only one kind is a - (ANSWER)chemical
element
Media attention in the 1990s regarding its treatment reduced consumer
confidence in - (ANSWER)emerald
a natural, inorganic substance with a characteristic chemical composition and
usual crystal structure is a - (ANSWER)mineral
most gems are - (ANSWER)minerals
To be a gem, a mineral must be beautiful, durable, and - (ANSWER)rare
a broad gem category based on chemical composition and crystal structure is
called a - (ANSWER)gem species
Many colored stones are mined by - (ANSWER)independent miners using small-
scale mining methods.
Rocks altered by heat and pressure beneath Earth's surface are -
(ANSWER)metamorphic
Which type of deposit is usually the most profitable for colored stone mining? -
(ANSWER)secondary
,Which gem can crystallize in volcanic rock from gasses released by magma? -
(ANSWER)red beryl
Emeralds are rarely found in placer deposits because they're - (ANSWER)unable
to withstand much abrasion
Which is a workable alluvial deposit of gem minerals with economic potential? -
(ANSWER)placers
Which is a deposit where gems eroded from the source rock and remained in
place nearby? - (ANSWER)eluvial
from granite, pegmatite gems get exotic elements like - (ANSWER)beryllium,
boron, and lithium
Myanmar's famous Mogok ruby deposits were formed by -
(ANSWER)metamorphic process
most of the gems in tanzania's umba river valley are formed in - (ANSWER)placer
deposits
A deposit where gems are found in the rock that where they formed is called -
(ANSWER)primary deposit
, Which is a key locality for hydrothermal gems? - (ANSWER)Ouro Preto, Brazil
Heat and pressure transform limestone into - (ANSWER)marble
which gem form by metamophosis - (ANSWER)tanzanite
Most gemstones form in the - (ANSWER)continental crust
kunzite is most often associated with - (ANSWER)tourmaline and beryl in
pegmatites
how heavy an object is in relation to its size - (ANSWER)density
A two-phase inclusion is a cavity in a gem that's typically filled with a -
(ANSWER)liquid and a gas
which type of twinning is caused by environmental change after a gem forms -
(ANSWER)polysynthetic
which element caused red in ruby and green in emerald - (ANSWER)chromium
A unit cell defines a mineral's - (ANSWER)basic identity
