GIA Colored Stones Assignment
15: Emeralds with Complete
Solutions
The most desirable emerald colors are _________ green to green, with strong to
_________ saturation and __________ to medium-dark tone.bluish, vivid, medium -
ANSWER - bluish, vivid, medium
The trade considers emerald to have the finest _________ among colored stones. -
ANSWER - green
Slight differences in hue, tone, and saturation can make a great difference in
emerald __________ when other factors are equal. - ANSWER - value
emerald's color-causing trace elements are - ANSWER - Chromium, vanadium, and
iron
Poor ____________ can greatly reduce a finished emerald's value. - ANSWER - cutting
transparent - ANSWER - Inclusions that make an emerald less ___________ also make
it less valuable.
The trade accepts the fact that most emeralds contain eye-visible ____________. -
ANSWER - inclusions
premium - ANSWER - The great majority of emeralds contain filled fractures, so
untreated stones command ____________ prices.
a stone is classified a green beryl when.... - ANSWER - its color is too light to be
classified as an emerald
, What's the estimated percentage of fashioned emeralds that contain filled
fractures? - ANSWER - 90 or more
Generally, the higher the chromium or vanadium content.... - ANSWER - the more
intense the green color
Emerald's fractures are often filled with _____ or ________ or a mixture of both. -
ANSWER - oil, resin
Gentle scrubbing with warm, ________ ________ is the safest way to clean emeralds. -
ANSWER - soapy water
The US and Japan account for about _____ percent of emerald purchases worldwide.
- ANSWER - 75
The world's emeralds are judged against _______________ finest. - ANSWER -
Colombia's
Emeralds from ____________ mines generally have fewer fractures than emeralds
from other sources. - ANSWER - African
Many countries supply emeralds to the trade, but few actually ________ them. -
ANSWER - mine
Synthetic spinel triplets are probably the most common emerald _____________ used
in jewelry. - ANSWER - imitations
Producers use flux and hydrothermal methods to _______________ emeralds. -
ANSWER - synthesize
Trapiche emeralds were first discovered in _______. - ANSWER - Muzo
The trade term "Zambian" describes emeralds with... - ANSWER - more bluish color
and darker tone than "Colombian."
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