GIA COLORED STONE ESSENTIALS QUESTIONS AND
CORRECT SOLUTIONS 100%
commercially important gems Treatments that improve gem appearance and quality increase the
supply of...
available, affordable Treatments that make gems more _____________ and ____________ are an
important part of today's gem and jewelry market.
disclosed All treatments, even suspected or probable treatments, should be ______________ as
part of every transaction.
gems that are commonly heat treated Corundum, tanzanite, zircon, topaz, aquamarine, and
amber.
heat treatment What can alter color and create or eliminate phenomena and inclusions?
lattice diffusion with titanium What produces a shallow layer of color that can be removed with
minor repolishing?
beryllium, penetrate The color resulting from lattice diffusion with _______________, might
______________ the entire stone.
emeralds Almost all ______________ on the market today are fracture filled.
irradiated, heat, light ____________ color is not always stable and exposure to _________ or
__________ can destroy it.
topaz, tourmaline, cultured pearl Commonly irradiated gems include,
bleaching What is a fairly common pearl treatment?
CORRECT SOLUTIONS 100%
commercially important gems Treatments that improve gem appearance and quality increase the
supply of...
available, affordable Treatments that make gems more _____________ and ____________ are an
important part of today's gem and jewelry market.
disclosed All treatments, even suspected or probable treatments, should be ______________ as
part of every transaction.
gems that are commonly heat treated Corundum, tanzanite, zircon, topaz, aquamarine, and
amber.
heat treatment What can alter color and create or eliminate phenomena and inclusions?
lattice diffusion with titanium What produces a shallow layer of color that can be removed with
minor repolishing?
beryllium, penetrate The color resulting from lattice diffusion with _______________, might
______________ the entire stone.
emeralds Almost all ______________ on the market today are fracture filled.
irradiated, heat, light ____________ color is not always stable and exposure to _________ or
__________ can destroy it.
topaz, tourmaline, cultured pearl Commonly irradiated gems include,
bleaching What is a fairly common pearl treatment?
