▎ 摘　　要

NOVELTY - A heteroepitaxial diamond comprises a heterogeneous substrate, a graphene flexible layer formed on the substrate, and a diamond layer which is epitaxially grown on the diamond layer. The graphene flexible layer is used as a flexible intermediate layer for growing diamonds on the heterogeneous substrate. USE - Heteroepitaxial diamond (claimed). ADVANTAGE - The heteroepitaxial diamond has suppressed reduction in quality due to lattice mismatch between the substrate and diamond. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of heteroepitaxial diamond.