GIA Diamond Exam Questions and
Answers- Essentials
chemical element - Answer-consists of only one kind of atom
mineral - Answer-inorganic. most minerals are a combo of 2 or more elements
diamonds form - Answer-within 90-120 miles below earth's surface
value factos - Answer-features used to judge the quality and value of stones - a diamonds value is based
on its combo of the Four C's
inclusions - Answer-clarity characteristic totally enclosed in a polished gemstone or extending into it
from the surface. affect value most
blemishes - Answer-clarity characteristic on the surface of a gemstone (surface irregularity). includes
scratches and knicks on a surface
rarest diamond colors - Answer-red, purple, green, orange- then pink and blue
, lab-grown - Answer-manmade material with the same chemical composition, crystal structure, and
properties
simulants/imitations - Answer-simply look like naturals- not the same composition (can be man made or
natural) - cz, moissanite, glass, zircon, LG spinel
Federal Trade Commission (FTC) - Answer-established by congress in 1914 to protect consumers from
unlawful business
cut - Answer-how light performs in a stone- affects brightness, fire, and scintillation
brightness - Answer-effect of stone's internal and external reflections of white light (brilliance)
fire - Answer-flashes of color in a diamond
scintillation - Answer-flashes of light and contrasting dark areas seen when the diamond, light, or
observer move
crown - Answer-top part of diamond- above firdle
girdle - Answer-narrow section between crown and pavillion- functions as the setting edge
pavillion - Answer-lower part- below girdle
facets - Answer-flat, polished surface
Answers- Essentials
chemical element - Answer-consists of only one kind of atom
mineral - Answer-inorganic. most minerals are a combo of 2 or more elements
diamonds form - Answer-within 90-120 miles below earth's surface
value factos - Answer-features used to judge the quality and value of stones - a diamonds value is based
on its combo of the Four C's
inclusions - Answer-clarity characteristic totally enclosed in a polished gemstone or extending into it
from the surface. affect value most
blemishes - Answer-clarity characteristic on the surface of a gemstone (surface irregularity). includes
scratches and knicks on a surface
rarest diamond colors - Answer-red, purple, green, orange- then pink and blue
, lab-grown - Answer-manmade material with the same chemical composition, crystal structure, and
properties
simulants/imitations - Answer-simply look like naturals- not the same composition (can be man made or
natural) - cz, moissanite, glass, zircon, LG spinel
Federal Trade Commission (FTC) - Answer-established by congress in 1914 to protect consumers from
unlawful business
cut - Answer-how light performs in a stone- affects brightness, fire, and scintillation
brightness - Answer-effect of stone's internal and external reflections of white light (brilliance)
fire - Answer-flashes of color in a diamond
scintillation - Answer-flashes of light and contrasting dark areas seen when the diamond, light, or
observer move
crown - Answer-top part of diamond- above firdle
girdle - Answer-narrow section between crown and pavillion- functions as the setting edge
pavillion - Answer-lower part- below girdle
facets - Answer-flat, polished surface
