Bournonite crystals belong to the orthorhombic form of short columnar and plate, brittle, with metallic luster, often Chenggang grey to dark grey.
车轮矿晶体，属斜方晶系，呈短柱状和板状，性脆，具有金属光泽，常呈钢灰色至暗铅灰色。
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It is generally recognized in the international mineral gemstone collectors, bournonite specimens of Yaogangxian produced with bedrock, intact, crystal large, gentle color, are rare treasures.