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O
opal
opal
pl:
opals
Related Words
gemstone
mineral
jewel
silica
iridescence
opalescence
quartz
diamond
ruby
sapphire
emerald
precious stone
jewelry
ring
pendant
luster
refraction
spectrum
rainbow
milky
mining
geology
crystal
amorphous
hydrated
facet
carat
cabochon
Last Updated: July 6, 2026
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