GIA DIAMOND ESSENTIALS EXAM ACTUAL

GIA DIAMOND ESSENTIALS EXAM (ACTUAL / )

QUESTIONS WITH VERIFIED 100% CORRECT ANSWERS

fracture filling - ---Answers----injects molten glass substance into a diamonds surface-reaching feathers or laser drill holes. (characteristic must reach the surface). doesn't "heal" the the fracture, just makes it harder to see. the injected material has a refractive index that is closer to a diamonds that air. NOT CONSIDERED PERMANENT SO GIA DOES NOT

GRADE THESE STONES

apparent clarity - ---Answers----describes the effects of treatments on the visual appeal of a gemstone, doesnt change actual clarity

flawless - ---Answers----no inclusions/blemishes under 10x.extra facets not visible faceup. naturals confined to girdle but dont thicken/distort it

internally flawless - ---Answers----no inclusions under 10x.minor blemishes (surface graining, naturals, extra facets)

very very slightly included - ---Answers----minute inclusions

• pinpoints, needles, internal graining, etc. extremely difficult

to see at 10x = VVS1. very difficult to see at 10x= VVS2

very slightly included - ---Answers----minute inclusions- small crystals, small feathers, clouds, etc. difficult to see at 10x= VS1. somewhat easy to see at 10x= VS2 1 / 3

slightly included - ---Answers----noticeable inclusions- crystals, feathers, clouds, twinning wisps, etc. Easy to see at 10x= SI1. Very easy to see at 10x= SI2

included - ---Answers----obvious inclusions under 10x- large feathers or large included crystals

diamond plot - ---Answers----record of clarity. green= blemish. red= inclusion. black= extra facets and metal position if mounted

pique - ---Answers----general term for included stones

normal color range - ---Answers----range of diamond colors from colorless to light yellow, brown and gray (D-Z). each letter is a range based on a combo of tone and saturation.graded on absence of color

hues - ---Answers----basic color of an object

tone - ---Answers----colors degree of darkness or lightness

saturation - ---Answers----colors strength or intensity

depth of color - ---Answers----combo of tone and saturation that determines how noticeable a color is 2 / 3

colorless - ---Answers----DEF

near colorless - ---Answers----GHIJ

faint color - ---Answers----KLM

very light color - ---Answers----NOPQR

light color - ---Answers----STUVWXYZ

masterstones - ---Answers----set of color comparison diamonds that defines GIA's diamonds color grades in D-Z range

consistent grading - ---Answers----depends on masterstones, environment, and grader

fluorescense - ---Answers----emission of visible light when exposed to ultraviolet radiation (light wavelength that is invisible to human eye). about 35% of diamonds have some degree of it

colored diamonds - ---Answers----yellow, brown, or gray diamonds with more color than the Z masterstone, or that exhibit any other color face-up outside normal color range.graded on presence of color

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