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[Subject: Mineralogy]
- Minéral auquel sa rareté, son éclat confèrent une grande valeur. fragment de ce minéral (brut ou travaillé)
Translated in 36 languages
[Subject: Petrology (Rocks)]
Translated in 5 languages
Translated by: GUEST USER
Translated in 2 languages
Translated by: DAVID LAURENT
Translated in 8 languages