Chapter 11 - Key Words & Concepts Flashcards
What are the three elements used to describe color?
Hue, tone, and saturation
What happens to cool and warm hues when saturation drops?
They become grayish and brownish, respectively
What are many colors called grays in reality?
Very low saturations of various hues
What is the GIA diamond color grading system?
The universal standard in the jewelry industry
What does each letter on the GIA color grading scale represent?
A narrow range of color
Where does the biggest price difference occur in the GIA color grading system?
Between the D and E grades, all other factors being equal
What is the purpose of the GIA color grading system?
To help diamond professionals communicate accurately about diamond color
What should influence the color grade as little as possible?
The color grading environment
What is the most widely accepted lighting for color grading diamonds?
Balanced, daylight-equivalent fluorescent light
What should the set of masterstones be matched to?
The specific color grading requirements of the user
What must be true for best results when grading a diamond?
The masterstones and the diamond to be graded must be clean
Is it possible to estimate diamond color accurately?
Yes, fairly accurate results can be obtained
What factors can influence a diamond’s color appearance?
Proportion variations, size, and clarity characteristics
How are colored diamonds graded?
Face-up
What is the goal of colored diamond color grading?
To arrive at a repeatable, consistent grade
What is characteristic color in the context of colored diamonds?
The basic face-up color of a colored diamond
What does depth of color refer to?
The combination of tone and saturation
What is hue?
The first impression of an object’s basic color
What is the master-eye effect?
An optical illusion that causes the ungraded diamond to appear lighter or darker than the masterstone
What are masterstones?
A set of color-comparison diamonds that defines GIA diamond color grades in the normal (D-to-Z) range
What is saturation in the context of color?
The strength or intensity of a color
What does tone refer to?
The degree of darkness or lightness of a color
