GIA Diamond Essentials Exam With 100% Correct Answers 2024
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Module
GIA Diamond Essentials
Institution
GIA Diamond Essentials
GIA Diamond Essentials Exam With 100%
Correct Answers 2024
chemical element - answerconsists of only one kind of atom
mineral - answerinorganic. most minerals are a combo of 2 or more elements
diamonds form - answerwithin 90-120 miles below earth's surface
value factos - answerfeatures used to...
GIA Diamond Essentials Exam With 100%
Correct Answers 2024
chemical element - answer✔✔consists of only one kind of atom
mineral - answer✔✔inorganic. most minerals are a combo of 2 or more elements
diamonds form - answer✔✔within 90-120 miles below earth's surface
value factos - answer✔✔features used to judge the quality and value of stones - a diamonds
value is based on its combo of the Four C's
inclusions - answer✔✔clarity characteristic totally enclosed in a polished gemstone or
extending into it from the surface. affect value most
blemishes - answer✔✔clarity characteristic on the surface of a gemstone (surface irregularity).
includes scratches and knicks on a surface
rarest diamond colors - answer✔✔red, purple, green, orange- then pink and blue
lab-grown - answer✔✔manmade material with the same chemical composition, crystal
structure, and properties
simulants/imitations - answer✔✔simply look like naturals- not the same composition (can be
man made or natural) - cz, moissanite, glass, zircon, LG spinel
Federal Trade Commission (FTC) - answer✔✔established by congress in 1914 to protect
consumers from unlawful business
cut - answer✔✔how light performs in a stone- affects brightness, fire, and scintillation
brightness - answer✔✔effect of stone's internal and external reflections of white light
(brilliance)
fire - answer✔✔flashes of color in a diamond
scintillation - answer✔✔flashes of light and contrasting dark areas seen when the diamond,
light, or observer move
crown - answer✔✔top part of diamond- above firdle
girdle - answer✔✔narrow section between crown and pavillion- functions as the setting edge
, pavillion - answer✔✔lower part- below girdle
facets - answer✔✔flat, polished surface
culet - answer✔✔small facet at bottom of stone
brilliant cut - answer✔✔cutting style with triangular or kite shaped facets that radiate from the
center toward the girdle
standard round brilliant - answer✔✔57-58 facets (full cut) - 58th facet is the culet if it has one
single cut - answer✔✔17-18 facets
fancy cuts - answer✔✔any shape other than round brilliant
step cuts - answer✔✔long narrow facets in rows parallel to girdle on both crown and pavillion-
usually in 3 or 4 rows
mixed cuts - answer✔✔cut that combines brilliant and step cut styles - usually step facets are
on crown and brilliant on pavillion
branded cuts - answer✔✔style developed, named, and promoted by a specific manufacturer
carat - answer✔✔unit of weight. one carat is 0.2 grams
durability - answer✔✔gemstones ability to withstand wear, heat, and chemicals - 3 properties:
hardness, toughness, stability
hardness - answer✔✔resistance to scratching and abrasion
toughness - answer✔✔resistance to breaking and chipping - diamonds are less tough where the
atoms are not bonded as tightly together
stability - answer✔✔ability to resist chemicals and temperature changes
Moh's scale - answer✔✔ranking of relative hardness of 10 minerals. Established 1822 by
Fredrick Mohs.
cleavage direction - answer✔✔where atoms are farthest apart
thermal shock - answer✔✔damage caused by sudden, extreme temperature changes.
diamonds will burn at 1562 degrees F
mining ratio - answer✔✔ratio of diamond to ore when mining is 0.30 carat per metric ton of
rock
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