Specimen of mineral stone corundum on gray background
Schlüsselwörter
corundum,
specimen,
abrasive,
aluminium,
closeup,
geologic,
geology,
hard,
hardness,
mine,
mineral,
natural,
nature,
object,
pattern,
rock,
rough,
sandpaper,
single,
solid,
stone,
surface,
textured,
yellow
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