GIA Colored Stones Assignment 9 Test
Questions And All Correct Answers
2025.
cut - Answer What greatly influences a transparent gem's interaction with light?
faceted - Answer Transparent rough is usually __________________.
proportion variations - Answer Cutters often use __________________ _________________
to retain as much weight as possible with expensive, rare, high-quality rough.
less care - Answer Cutters take ________ __________ with inexpensive, low-quality rough, so
finished stones often have proportion variations.
precise cutting - Answer The market demands ___________ ____________ and proportions in
gems cut from relatively available moderately priced rough.
preforming - Answer ________________ is done by highly skilled workers because it has the
greatest impact on a finished gem's value.
opaque - Answer _____________ or translucent rough is often cut into cabochons, cameos,
intaglios, or beads.
expert cutting - Answer _____________ __________ maximizes a gem's brilliance and color.
windows - Answer Flat stones with shallow pavilions usually have areas of lower color
intensity, called _________________.
deep pavilions - Answer You'll usually see dark areas, or extinction, through the crown in
stones with _________ ______________.
save weight - Answer Most outline variations in colored stones are intended to _______
__________.
, brilliance - Answer Most proportion and symmetry variations are visible through the crown as
reduced or uneven _______________.
crown, pavilion, symmetry, outline - Answer Important factors in evaluating a faceted gem's
proportions are its __________ and ____________ depths, the _________________ of its
profile, and its face-up ____________.
brilliance - Answer Light that eventually returns to the eye after entering a gem through the
crown, reflecting off its pavilion facets, and exiting back through the crown.
brilliant cut - Answer Cutting style with triangular or kite-shaped facets that radiates from the
center toward the girdle.
cabochon - Answer A smoothly rounded polished gem with a domed top and a flat or curved
base.
cameo - Answer A gem carving style in which the design, often a woman's profile, projects
slightly from a flat or curved surface.
cobbing - Answer Removing heavily included sections from gemstone rough by carefully
tapping it with a small hammer.
crown - Answer Top part of the gem above the girdle.
crown-height to pavilion-depth ratio - Answer The relationship of the height of a gem's crown
to the depth of its pavilion, judged by viewing its profile.
designer cuts - Answer Artistic gem cuts that aren't limited to specific proportions or shapes.
dopstick - Answer Wooden or metal stick that holds the preform during faceting.
faceting head - Answer Device that holds the dopstick at precise angles to allow correct
orientation during faceting and polishing.
Questions And All Correct Answers
2025.
cut - Answer What greatly influences a transparent gem's interaction with light?
faceted - Answer Transparent rough is usually __________________.
proportion variations - Answer Cutters often use __________________ _________________
to retain as much weight as possible with expensive, rare, high-quality rough.
less care - Answer Cutters take ________ __________ with inexpensive, low-quality rough, so
finished stones often have proportion variations.
precise cutting - Answer The market demands ___________ ____________ and proportions in
gems cut from relatively available moderately priced rough.
preforming - Answer ________________ is done by highly skilled workers because it has the
greatest impact on a finished gem's value.
opaque - Answer _____________ or translucent rough is often cut into cabochons, cameos,
intaglios, or beads.
expert cutting - Answer _____________ __________ maximizes a gem's brilliance and color.
windows - Answer Flat stones with shallow pavilions usually have areas of lower color
intensity, called _________________.
deep pavilions - Answer You'll usually see dark areas, or extinction, through the crown in
stones with _________ ______________.
save weight - Answer Most outline variations in colored stones are intended to _______
__________.
, brilliance - Answer Most proportion and symmetry variations are visible through the crown as
reduced or uneven _______________.
crown, pavilion, symmetry, outline - Answer Important factors in evaluating a faceted gem's
proportions are its __________ and ____________ depths, the _________________ of its
profile, and its face-up ____________.
brilliance - Answer Light that eventually returns to the eye after entering a gem through the
crown, reflecting off its pavilion facets, and exiting back through the crown.
brilliant cut - Answer Cutting style with triangular or kite-shaped facets that radiates from the
center toward the girdle.
cabochon - Answer A smoothly rounded polished gem with a domed top and a flat or curved
base.
cameo - Answer A gem carving style in which the design, often a woman's profile, projects
slightly from a flat or curved surface.
cobbing - Answer Removing heavily included sections from gemstone rough by carefully
tapping it with a small hammer.
crown - Answer Top part of the gem above the girdle.
crown-height to pavilion-depth ratio - Answer The relationship of the height of a gem's crown
to the depth of its pavilion, judged by viewing its profile.
designer cuts - Answer Artistic gem cuts that aren't limited to specific proportions or shapes.
dopstick - Answer Wooden or metal stick that holds the preform during faceting.
faceting head - Answer Device that holds the dopstick at precise angles to allow correct
orientation during faceting and polishing.
