GIA COLORED STONES FINAL EXAMS ALL
QUESTIONS AND ANSWERS SURE A+
✔✔brilliant cut - ✔✔cutting style with triangular or kite-shaped facets that radiate from
the center toward the girdle
✔✔step cut - ✔✔cutting style with mainly square and rectangular facets arranged in
concentric rows
✔✔mixed cut - ✔✔cutting style that combines brilliant-cut and step-cut facets
✔✔cabochons - ✔✔a smoothly rounded polished gem with a domed top and a flat or
curved base
✔✔cameo - ✔✔a gem carving style in which the design, often a woman's profile,
projects slightly from a flat or curved surface
✔✔scintillation - ✔✔flashes of light displayed by a polished gemstone when the gem,
the observer, or the light source moves
✔✔calibrated sizes - ✔✔gemstone sizes cut to fit standard mountings/strict
measurements and proportions
, ✔✔designer cuts - ✔✔artistic gem cuts that aren't limited to specific proportions or
shapes
✔✔fantasy cut - ✔✔a free-form cut that can feature alternating curved and flat surfaces
✔✔metric carat (1 carat equals 0.20 gram) - ✔✔the international unit of measurement
for gem weight
✔✔points - ✔✔One one-hundredth of a carat (0.01 ct.)
✔✔total gem weight - ✔✔the combined weight of all the stones in a piece of jewelry that
contains a variety of gems
✔✔per-carat price - ✔✔the price of the gem divided by its carat weight
✔✔density - ✔✔the weight of an object in relation to its size
✔✔specific gravity - ✔✔ratio of the weight of a material to the weight of an equal volume
of water
✔✔a wide variety of blemishes and inclusions - ✔✔What can colored stones display?
✔✔because of the way gem crystals form - ✔✔Why do most colored stones have some
inclusions?
✔✔cat's-eyes and stars - ✔✔What kind of phenomena can silk create?
✔✔inclusions - ✔✔What can help separate natural gems from lab-grown gems?
✔✔inclusions that might affect a gem's durability - ✔✔What should always be shared
with customers about a gem?
✔✔because the gem crystals develop typical shapes and sizes - ✔✔Why do some
gems lend themselves well to certain cuts?
✔✔extreme proportion variations - ✔✔What can reduce a gem's beauty and durability?
✔✔color and weight - ✔✔What is often more important value factors than cut for very
expensive gemstones?
✔✔knowing the per-carat price - ✔✔What can help you compare the values of different
stones?
QUESTIONS AND ANSWERS SURE A+
✔✔brilliant cut - ✔✔cutting style with triangular or kite-shaped facets that radiate from
the center toward the girdle
✔✔step cut - ✔✔cutting style with mainly square and rectangular facets arranged in
concentric rows
✔✔mixed cut - ✔✔cutting style that combines brilliant-cut and step-cut facets
✔✔cabochons - ✔✔a smoothly rounded polished gem with a domed top and a flat or
curved base
✔✔cameo - ✔✔a gem carving style in which the design, often a woman's profile,
projects slightly from a flat or curved surface
✔✔scintillation - ✔✔flashes of light displayed by a polished gemstone when the gem,
the observer, or the light source moves
✔✔calibrated sizes - ✔✔gemstone sizes cut to fit standard mountings/strict
measurements and proportions
, ✔✔designer cuts - ✔✔artistic gem cuts that aren't limited to specific proportions or
shapes
✔✔fantasy cut - ✔✔a free-form cut that can feature alternating curved and flat surfaces
✔✔metric carat (1 carat equals 0.20 gram) - ✔✔the international unit of measurement
for gem weight
✔✔points - ✔✔One one-hundredth of a carat (0.01 ct.)
✔✔total gem weight - ✔✔the combined weight of all the stones in a piece of jewelry that
contains a variety of gems
✔✔per-carat price - ✔✔the price of the gem divided by its carat weight
✔✔density - ✔✔the weight of an object in relation to its size
✔✔specific gravity - ✔✔ratio of the weight of a material to the weight of an equal volume
of water
✔✔a wide variety of blemishes and inclusions - ✔✔What can colored stones display?
✔✔because of the way gem crystals form - ✔✔Why do most colored stones have some
inclusions?
✔✔cat's-eyes and stars - ✔✔What kind of phenomena can silk create?
✔✔inclusions - ✔✔What can help separate natural gems from lab-grown gems?
✔✔inclusions that might affect a gem's durability - ✔✔What should always be shared
with customers about a gem?
✔✔because the gem crystals develop typical shapes and sizes - ✔✔Why do some
gems lend themselves well to certain cuts?
✔✔extreme proportion variations - ✔✔What can reduce a gem's beauty and durability?
✔✔color and weight - ✔✔What is often more important value factors than cut for very
expensive gemstones?
✔✔knowing the per-carat price - ✔✔What can help you compare the values of different
stones?
