GIA COLORED STONES LATEST TESTBANK
EXAM 2026 FULL 1129 QUESTIONS WITH
VERIFIED DETAILED ANSWERS GRADED
A+
⩥ Pulling. Answer: A process in which the synthetic crystal grows from
a seed that is dipped into a chemical melt, then pulled away as it gathers
material.
⩥ Quench cracking. Answer: A rapid heating and cooling process that
produces fractures in a stone so it accept dye.
⩥ Reconstructed turquoise. Answer: A turquoise imitation made of
mixture of powdered minerals, dyed and bonded with plastic or epoxy
resin.
⩥ Reducing environment. Answer: An oxygen-poor environment that
surrounds a gem during heat treatment, causing it to lose oxygen.
⩥ Refraction. Answer: Change in speed and possible change in direction
of light as it travels from one material to another.
,⩥ Regional metamorphism. Answer: Changes in rock type and minerals
over a wide area, caused by heat and pressure of large-scale geological
events.
⩥ Relatively old mine. Answer: The medium texture category of jadeite.
⩥ Relief. Answer: Contrast between an inclusion and its host gem.
⩥ Resin. Answer: A clear, viscous substance that's used to fill fractures
in gemstones.
⩥ Rice pearls. Answer: Chinese freshwater cultured pearls shaped and
textured like rice grains.
⩥ Rice jade. Answer: Weathered, thin-skinned jadeite boulders.
⩥ Rock. Answer: A natural material composed of masses of mineral
crystals of one or more kinds.
⩥ Rubelite. Answer: Trade name for pink to red elbaite tourmaline.
⩥ Rutilated quartz. Answer: A type of sagenitic quartz containing
needle-like rutile inclusions.
,⩥ Sagenitic quartz. Answer: Transparent quartz, usually rock crystal,
that contains eye-visible inclusions, often named according to the type of
inclusion it contains.
⩥ Saturation. Answer: A color's strength or intensity.
⩥ Sawing. Answer: Dividing gem rough into easily handled pieces and
removing waste areas.
⩥ Scoop. Answer: A small shovel made of thin metal, used for picking
up gems.
⩥ Scratch. Answer: A linear scape, normally seen as a fine, curved or
straight, white line.
⩥ Secondary deposit. Answer: Gems found away from their primary
source.
⩥ Sedimentary rock. Answer: Rock produced from the eroded and
weathered remains of existing rocks.
, ⩥ Seed crystal. Answer: A tiny crystal used as a template to control the
size, speed, or direction of growth and the shape of a growing synthetic
crystal.
⩥ Selective absorption. Answer: Process by which a material absorbs
some components of visible light and transmits others.
⩥ Show points. Answer: Spots of color near the surface of a jadeite
boulder, where the skin is thin enough to allow color to show through.
⩥ Sieve set. Answer: Set of circular plates, each punched with precisely
sized holes, used to sort small, round gems by size.
⩥ Signet. Answer: A table-cut gem with a flat or slightly domed top and
sometimes a carved design, typically set in men's rings and cufflinks.
⩥ Silicate. Answer: A mineral that contains the elements silicon and
oxygen.
⩥ Silk. Answer: Group of fine needle-like inclusions.
⩥ Single refraction. Answer: When a gem's crystal structure doesn't
change incoming light other than by refraction and absorption.
EXAM 2026 FULL 1129 QUESTIONS WITH
VERIFIED DETAILED ANSWERS GRADED
A+
⩥ Pulling. Answer: A process in which the synthetic crystal grows from
a seed that is dipped into a chemical melt, then pulled away as it gathers
material.
⩥ Quench cracking. Answer: A rapid heating and cooling process that
produces fractures in a stone so it accept dye.
⩥ Reconstructed turquoise. Answer: A turquoise imitation made of
mixture of powdered minerals, dyed and bonded with plastic or epoxy
resin.
⩥ Reducing environment. Answer: An oxygen-poor environment that
surrounds a gem during heat treatment, causing it to lose oxygen.
⩥ Refraction. Answer: Change in speed and possible change in direction
of light as it travels from one material to another.
,⩥ Regional metamorphism. Answer: Changes in rock type and minerals
over a wide area, caused by heat and pressure of large-scale geological
events.
⩥ Relatively old mine. Answer: The medium texture category of jadeite.
⩥ Relief. Answer: Contrast between an inclusion and its host gem.
⩥ Resin. Answer: A clear, viscous substance that's used to fill fractures
in gemstones.
⩥ Rice pearls. Answer: Chinese freshwater cultured pearls shaped and
textured like rice grains.
⩥ Rice jade. Answer: Weathered, thin-skinned jadeite boulders.
⩥ Rock. Answer: A natural material composed of masses of mineral
crystals of one or more kinds.
⩥ Rubelite. Answer: Trade name for pink to red elbaite tourmaline.
⩥ Rutilated quartz. Answer: A type of sagenitic quartz containing
needle-like rutile inclusions.
,⩥ Sagenitic quartz. Answer: Transparent quartz, usually rock crystal,
that contains eye-visible inclusions, often named according to the type of
inclusion it contains.
⩥ Saturation. Answer: A color's strength or intensity.
⩥ Sawing. Answer: Dividing gem rough into easily handled pieces and
removing waste areas.
⩥ Scoop. Answer: A small shovel made of thin metal, used for picking
up gems.
⩥ Scratch. Answer: A linear scape, normally seen as a fine, curved or
straight, white line.
⩥ Secondary deposit. Answer: Gems found away from their primary
source.
⩥ Sedimentary rock. Answer: Rock produced from the eroded and
weathered remains of existing rocks.
, ⩥ Seed crystal. Answer: A tiny crystal used as a template to control the
size, speed, or direction of growth and the shape of a growing synthetic
crystal.
⩥ Selective absorption. Answer: Process by which a material absorbs
some components of visible light and transmits others.
⩥ Show points. Answer: Spots of color near the surface of a jadeite
boulder, where the skin is thin enough to allow color to show through.
⩥ Sieve set. Answer: Set of circular plates, each punched with precisely
sized holes, used to sort small, round gems by size.
⩥ Signet. Answer: A table-cut gem with a flat or slightly domed top and
sometimes a carved design, typically set in men's rings and cufflinks.
⩥ Silicate. Answer: A mineral that contains the elements silicon and
oxygen.
⩥ Silk. Answer: Group of fine needle-like inclusions.
⩥ Single refraction. Answer: When a gem's crystal structure doesn't
change incoming light other than by refraction and absorption.
