GIA COLORED STONES ASSIGNMENT 3 QUESTIONS AND CORRECT SOLUTIONS 100%
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GIA Colored Stones
Institution
GIA Colored Stones
GIA COLORED STONES ASSIGNMENT 3 QUESTIONS AND
CORRECT SOLUTIONS 100%
crystalline minerals what are classified into seven crystal systems, depending on the symmetry of
their unit cells?
exterior shape what part of a crystal often indicates its symmetry at an atomic level?
rare What do you cal...
GIA COLORED STONES ASSIGNMENT 3 QUESTIONS AND
CORRECT SOLUTIONS 100%
crystalline minerals what are classified into seven crystal systems, depending on the symmetry of
their unit cells?
exterior shape what part of a crystal often indicates its symmetry at an atomic level?
rare What do you call gems that require rare chemical elements or unique geological conditions,
or both, to form?
twinning What can result form a change during crystal growth, or from cooling or pressure after
the crystal has grown?
inclusions What can help identify a colored stone as natural or manmade, untreated or treated?
large inclusions What can dramatically affect beauty, value, and durability?
identify them What can a gemstone's recognizable crystal shape help do?
finished stones The shapes and sizes of rough gem crystals affect the shapes and sizes of...
gem density and specific gravity What two things depend on the types of atoms a gem is made of,
and how closely they're packed together?
cleavage, parting, and fracture The three different ways a gem breaks are called...
reaction to external stress A gem's crystal structure determines its...
aggregate A mass of tiny, randomly oriented crystals.
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