Tourmaline stones are commonly known as a unique function of a rare gem-grade ore.

托玛琳（英文名Tourmaline）宝石俗称“碧玺”是世界上具有独特功能的一种稀有宝石级矿石。

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Tourmaline stones are commonly known as a unique function of a rare gem-grade ore.

托玛琳（英文名Tourmaline）宝石俗称“碧玺”是世界上具有独特功能的一种稀有宝石级矿石。

youdao