crystals of Corundum (emery; diamond spar)
Palabras clave
crystal,
emery,
gemstone,
jewellery,
pebble,
black,
gem,
gem,
mineral,
stone,
hard,
solid,
isolated,
cut-out,
crude,
decorative,
mining,
natural,
nature,
object,
raw,
rough,
wild,
white,
mineralogy,
science,
faceted,
polyhedron,
collection,
piece,
specimen,
uncut,
hardness
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