Term
The regular, repeating internal arrangement of atoms in a mineral is called
a. crystal structure
b.chemical formula
c.amorphous structure
d. chemical composition |
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Minerals that do not have a crystal structure are
a.pure
b.synthetic
c.amorphous |
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One of the most obvious effects of a trace element in a mineral is
a.color
b.value
c.rarity
d.shape |
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The appearance of a materials surface in reflected light is called
a.luster
b.symmetry
c.transparency
d.crystal structure |
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A material that is structured so that no light can pass through is
a. opague
b. translucent
c. transparent |
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Term
A gem that is not easily affected by light, chemicals, or heat has good
a.stability
b.hardness
c.toughness |
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Term
All members of the same gemological species have the same
a. beauty
b. color
c. trace elements
d. chemical composition |
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Term
Each of hte different colors that make up white light is called a spectral
a. hue
b. tone
c. disperation
a. absorption |
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Term
A colors strength or intensity is called
a. hue
b. tone
c. brilliance
d. saturation |
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Term
A gem that shows different bodycolors depending on the viewing direction is
a. dispersive
b. pleochroic
c. flourescent |
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Definition
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Term
The seperation of white light into spectral colors is called
a. disperation
b. windowing
c. pleochorism
d. color zoning |
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Term
Gems that display uusual optical effects are classified as
a. rare
b. precious
c. phenominal |
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Term
The shifting flashes of rainbow hues seen in opals are known as
a. diffraction
b. disperationc. ploechorism
d. play-of-color |
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Definition
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Term
Alexandrite shows color change in response to
a. the type of light
b. the viewing angle
c. the style of the cut
d. the quality of the setting |
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Term
Star ruby shows a phenomenon called
a. orient
b. asterism
c. iridescence
d. chatoyancy |
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Term
Orient is the term for the irridescence seen in some
a. pearls
b. fire agates
c. spectrolites
d. labrodites |
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Definition
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Term
The emission of visible light by a material when it's simulated by ultraviolet radiation or other forms of radiation is
a. diffraction
b. pleochorism
c. flourescence
d. selective absorption |
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Term
Which gem displays chatoyancy?
a. fire agate
b. lapis lazuli
c. star sapphire
d. cats-eye chrysoberyl |
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Definition
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Term
Which gem is best known for the phenomenon called color change
a. opal
b. tanzanite
c. tounaline
d. alexandrite |
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Definition
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Term
An area of weaker color caused by light leaking from the bottom of the stone is called
a. extinction
b. windowing
c. pleochorism
d. color zoning |
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Term
Colored stones that tend to cleave include tanzanite, kunzite, moonstone, and
a.topaz
b. peridot
c. emerald
d. toumaline |
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Definition
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Term
Any type of break other than cleavage or parting is called
a. a fracture
b. eye-visable
c. a twinning plane
d. a structural direction |
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Definition
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Term
The inclusions that can create phenomenon such as cats-eyes and stars are sometimes called
a. pits
b.silk
c. nicks
d. scratches |
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Term
| A curved and ridged fracture in a gemstone, extending from the surface inward |
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Definition
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Term
| The network of tiny fractures that develops when an opal loses moisture |
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Definition
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Term
| a direct way to correct a customers misconceptions |
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Definition
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Term
| a way to correct a customers misconceptions without calling then "wrong" |
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Definition
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Term
| reenstatement of a benefit posed as a question to elict agreement |
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Definition
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Term
| A two part slaes technique that removes the customers "just looking" defence. |
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Term
The worlds greatest collection of fashioned emeralds is located in
a. Iran b. India c.Russia d. Great Britian |
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The worlds most important source of emeralds is
a.Thailand b.Sri Lanka c.columbia d.Zimbabwe |
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Definition
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Term
The two phenomena most likey to occur in sapphire are asterism and
a.Orient
b. color change c. play-of-color d. labradorescence |
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Definition
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Term
| Ultrasonic cleaners can cause problems if a stone is porus, has low toughness, or is a. irridated, b. heat treated c. fracture-filled |
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