Crystalline Anisotropy and Fracture Propagation in Gem-Grade Diamond Faceting

金刚石晶体各向异性与切工中裂纹扩展路径

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Diamond’s exceptional hardness arises from its tightly bonded tetrahedral carbon lattice, yet this same rigidity creates directional vulnerability along cleavage planes.
When subjected to precise impact or thermal shock, fractures propagate preferentially along the octahedral {111} crystallographic planes rather than isotropically.

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