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C
corundum
corundum
Related Words
alumina
ruby
sapphire
mineral
crystal
hardness
abrasive
gemstone
oxide
crystalline
geology
refraction
chromium
iron
titanium
facet
carat
luster
igneous
metamorphic
ore
polishing
grinding
industrial
jewelry
precious stone
trigonal
hexagonal
Last Updated: July 2, 2026
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