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1.The isooconovine was a rare and valuable gem.
这种宝石稀有且价值连城。
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2. The isooconovine was discovered in the remote region of the Himalayas.
这种宝石在喜马拉雅山脉的偏远地区被发现。
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3.The isooconovine was highly sought after by collectors due to its rarity.
由于其稀有性,这种宝石受到了收藏家的极高追捧。