Potential answers for "Oxide in rubies and sapphires"

⭐⭐⭐⭐ ALUMINA
⭐⭐⭐ SRILANKA
⭐⭐⭐ GEMS
⭐⭐⭐ PRECOCIOUS
⭐⭐ PROVERBS
⭐⭐ YTTRIA
⭐⭐ TRI
⭐⭐ GAS
⭐⭐ ITCH

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