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Colored Stones 8
Color
14
Geology
Post-Graduate
08/28/2018

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Cards

Term
Bodycolor
Definition
a gemstone's basic color, determined by its selective absorption of light
Term
Color Range
Definition
the selection of colors in which a gemstone occurs
Term
Color Zoning
Definition
areas of different color in a gem, caused by variations in growth conditions
Term
Extinction
Definition
dark areas in a faceted transparent colored stone
Term
Fine Color
Definition
the color or colors in a gemstone's color range considered by the trade to be the most desirable
Term
Hue
Definition
the first impression of an object's basic color
Term
Intended Color Zoning
Definition
visible face-up color zoning that was planned during the cutting process
Term
Planned Light Leakage
Definition
light that exits through a gem's crown in a controlled way due to the correct proportions of its cut
Term
Saturation
Definition
a color's strength or intensity
Term
Tone
Definition
degree of darkness or lightness of a color
Term
Trade Terms
Definition
terms often used in the jewelry industry to describe particular gemstone colors or link gems with specific geographic locations
Term
Unintended Color Zoning
Definition
visible face-up color zoning that the cutter was unable to conceal
Term
Unintended Light Leakage
Definition
light that exits through the pavilion in an uncontrolled way due to compromises in a gem's proportions
Term
Window
Definition
an area of weak saturation in a transparent gemstone's bodycolor that usually results from the way the gem was cut
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