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。
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.
国际矿物宝石收藏界普遍认为，瑶岗仙出产的带有基岩的车轮矿标本，完好无损、晶体硕大、色泽柔美，是难得一见的珍品。
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.
国际矿物宝石收藏界普遍认为，瑶岗仙出产的带有基岩的车轮矿标本，完好无损、晶体硕大、色泽柔美，是难得一见的珍品。
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