GIA COLORED STONE ESSENTIALS
QUESTIONNAIRE 2 AND VERIFIED
ANSWERS.
The lightness or darkness of a color is called its ANSWER : -tone
Color is born from an interaction between light, an object, and ANSWER : -an observer
Orient is the term for the iridescence seen in some ANSWER : -pearls
The trade term used to describe orangy red topaz is ANSWER : -imperial
A gem that shows different body colors depending on the viewing direction is ANSWER : -pleochroic
Areas of different color in a gem, caused by variations in growth conditions, is called ANSWER : -color
zoning
Alexandrite shows color change in response to ANSWER : -the type of light
The separation of white light into spectral colors is called ANSWER : -dispersion
The shifting flashes of rainbow hues seen in opals are known as ANSWER : -play-of-color
Each of the colors that make up white light is called a spectral ANSWER : -hue
Gems that display unusual optical effects are classified as ANSWER : -phenomenal
QUESTIONNAIRE 2 AND VERIFIED
ANSWERS.
The lightness or darkness of a color is called its ANSWER : -tone
Color is born from an interaction between light, an object, and ANSWER : -an observer
Orient is the term for the iridescence seen in some ANSWER : -pearls
The trade term used to describe orangy red topaz is ANSWER : -imperial
A gem that shows different body colors depending on the viewing direction is ANSWER : -pleochroic
Areas of different color in a gem, caused by variations in growth conditions, is called ANSWER : -color
zoning
Alexandrite shows color change in response to ANSWER : -the type of light
The separation of white light into spectral colors is called ANSWER : -dispersion
The shifting flashes of rainbow hues seen in opals are known as ANSWER : -play-of-color
Each of the colors that make up white light is called a spectral ANSWER : -hue
Gems that display unusual optical effects are classified as ANSWER : -phenomenal
