INDEX
absorption
agate
age dating (zircon)
alluvial
alexandrite effect
amber
amethyst
amphibole
aquamarine
aragonite
asterism
azurite
band theory
beryl
blister pearls
boule
brilliant cut
cabochon
cat's eye
carat
chalcedony
citrine
cleavage
conchiolin
coordination
coral
corundum
critical angle
crown
crysoberyl
crystal
crystal systems
carat
clarity
charge transfer
color centers
color in minerals
cordierite
cubic
cubic zirconia
culet
cultured pearls
cuts
cyclic twins
density
diamond - factors affecting value
diamond inclusions and flaws
diamond irradiation
diamond simulants
diffraction
diffusion treatment (sapphires and
rubies)
diopside
dispersion
electromagnetic spectrum
emerald
emerald cut
euhedral
facets
feldspar
fire
flaws
fluorescence
garnet
gem
geode
GGG
girdle
hardness
heat treatment (sapphires and rubies)
heliodor
hexagonal
hydrothermal
illumination and color perception
impurities and color
internal reflection
irridescence
jade
kimberlite
labradorite
lapis
luminescence
luster
mantle
malachite
metamorphic
monoclinic
moonstone
morganite
nacre
nephrite
olivine
orthoclase
opal
orient
orthorhombic
pavilion
pearls
pegmatite
piezoelectric
pleochroism
polymorphs
pyroelectic
pyroxene
quartz
radioactivity in minerals
read through effect
reflection pattern
refractive index
refractometer
residual radioactivity
rock-forming minerals
ruby
rutile
sapphire
schiller
slocum stone
specific gravity
spinel
spodumene
strontium titanate
symmetry
synthetic diamond
table
tanzanite
tetragonal
tiger's eye
topaz
tourmaline
transmission (of light)
turquoise
twinning
triclinic
value
YAG
zircon
zoisite
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