Colored Stones Quiz 2
Boule - answer A cylindrical synthetic crystal produced by a melt process.
Ceramic process - answer A process in which finely ground powder is heated,
sometimes under pressure, to produce a fine-grained solid material.
Chevron growth pattern - answer A feature of some hydrothermal synthetic gems that
looks like rows of pointed arches.
Disclosure - answer Clearly and accurately informing cus- tomers about the nature of
the goods they buy.
Flame fusion - answer A process in which powdered chemi- cals are dropped through a
high-temperature flame onto a rotating pedestal to produce a synthetic crystal.
Flux growth - answerA process in which nutrients dissolve in heated chemicals, then
cool to form synthetic crystals.
Hydrothermal growth - answerA process in which nutrients dissolve in a water solution
at high temperature and pressure, then cool to form synthetic crystals.
Melt process - answerA synthetic-crystal growth method in which the chemical mixture
is melted, then recrystallized.
Paste - answerTrade term for an imitation gem made of manmade glass.
Pulling - answerA process in which the synthetic crystal grows from a seed that is
dipped into a chemical melt, then pulled away as it gathers material.
Sedimentation - answerA process in which silica spheres are allowed to settle and then
are compressed into synthetic opal.
Seed crystal - answerA tiny crystal used as a template to control the size, speed, or
direction of growth and the shape of a growing synthetic crystal.
Skull melt - answerA synthetic-crystal growth method that uses cooling pipes around an
interior of melted chemical ingredients.
Slocum Stone - answerA manmade glass opal imitation with scattered, tinsel-like
colored flakes that imitate play-of-color.
, Solution process - answerA method in which the synthetic crystal grows from a
dissolved chemical mixture, sometimes at high temperature and pressure.
Sublimation process - answerA process in which heated gases come together and
crystallize.
Cleavage - answerA smooth, flat break in a gem- stone parallel to planes of atomic
weakness, caused by weak or fewer bonds between atoms, or both.
Conchoidal fracture - answerA curved and ridged fracture in a gemstone, extending
from the surface inward.
Dispersion - answerThe separation of white light into spectral colors.
Fire - answerThe flashes of spectral color you see in a polished gem, especially a
diamond.
Fracture - answerAny break in a gem other than cleavage or parting.
Granular fracture - answerA sugary or grainy fracture that appears in microcrystalline
aggregates.
Heft - answerHow heavy an object feels in relation to its size.
Luster - answerThe appearance of a material's surface in reflected light.
Opaque - answerDescription of a material that's unable to transmit light, so an image
can't be seen through it.
Parting - answerA flat break in a gemstone parallel to a twinning plane.
Splintery fracture - answerA gemstone fracture that looks like broken wood, resulting
from the fibrous structure of certain gems.
Translucent - answerDescription of a material that's capable of partially transmitting light
so an image seen through it appears obscure, with a vague outline.
Transparency - answerThe degree to which a material transmits light.
Transparent - answerDescription of a material that's capable of transmitting light so
objects viewed through it appear clear and sharp.
Alluvial deposit - answerA deposit where gems are eroded from their source rock, then
transported away from the source and further concentrated.
Boule - answer A cylindrical synthetic crystal produced by a melt process.
Ceramic process - answer A process in which finely ground powder is heated,
sometimes under pressure, to produce a fine-grained solid material.
Chevron growth pattern - answer A feature of some hydrothermal synthetic gems that
looks like rows of pointed arches.
Disclosure - answer Clearly and accurately informing cus- tomers about the nature of
the goods they buy.
Flame fusion - answer A process in which powdered chemi- cals are dropped through a
high-temperature flame onto a rotating pedestal to produce a synthetic crystal.
Flux growth - answerA process in which nutrients dissolve in heated chemicals, then
cool to form synthetic crystals.
Hydrothermal growth - answerA process in which nutrients dissolve in a water solution
at high temperature and pressure, then cool to form synthetic crystals.
Melt process - answerA synthetic-crystal growth method in which the chemical mixture
is melted, then recrystallized.
Paste - answerTrade term for an imitation gem made of manmade glass.
Pulling - answerA process in which the synthetic crystal grows from a seed that is
dipped into a chemical melt, then pulled away as it gathers material.
Sedimentation - answerA process in which silica spheres are allowed to settle and then
are compressed into synthetic opal.
Seed crystal - answerA tiny crystal used as a template to control the size, speed, or
direction of growth and the shape of a growing synthetic crystal.
Skull melt - answerA synthetic-crystal growth method that uses cooling pipes around an
interior of melted chemical ingredients.
Slocum Stone - answerA manmade glass opal imitation with scattered, tinsel-like
colored flakes that imitate play-of-color.
, Solution process - answerA method in which the synthetic crystal grows from a
dissolved chemical mixture, sometimes at high temperature and pressure.
Sublimation process - answerA process in which heated gases come together and
crystallize.
Cleavage - answerA smooth, flat break in a gem- stone parallel to planes of atomic
weakness, caused by weak or fewer bonds between atoms, or both.
Conchoidal fracture - answerA curved and ridged fracture in a gemstone, extending
from the surface inward.
Dispersion - answerThe separation of white light into spectral colors.
Fire - answerThe flashes of spectral color you see in a polished gem, especially a
diamond.
Fracture - answerAny break in a gem other than cleavage or parting.
Granular fracture - answerA sugary or grainy fracture that appears in microcrystalline
aggregates.
Heft - answerHow heavy an object feels in relation to its size.
Luster - answerThe appearance of a material's surface in reflected light.
Opaque - answerDescription of a material that's unable to transmit light, so an image
can't be seen through it.
Parting - answerA flat break in a gemstone parallel to a twinning plane.
Splintery fracture - answerA gemstone fracture that looks like broken wood, resulting
from the fibrous structure of certain gems.
Translucent - answerDescription of a material that's capable of partially transmitting light
so an image seen through it appears obscure, with a vague outline.
Transparency - answerThe degree to which a material transmits light.
Transparent - answerDescription of a material that's capable of transmitting light so
objects viewed through it appear clear and sharp.
Alluvial deposit - answerA deposit where gems are eroded from their source rock, then
transported away from the source and further concentrated.
