Sapphire has a hardness of 9 on the Mohs scale and is also extremely tough.
蓝宝石具有硬度大、9月的层数也非常强硬。
After 3 minutes, tough and resilient ring drive shearing moiety, but because the ring is too thick, hardness too big, still can not fold its flexure to dismantle.
3分钟后，坚韧的戒指被剪断了一半，但由于戒指太厚，硬度太大，仍无法将其折弯取下。
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