The results show that specimens containing ferro chromic oxide are with higher susceptibility,while turmaline,agate,synthetic corundum and moonstone are negative in susceptibility and present antimagnetism.

• 样品中含铁、铬氧化物者磁化率偏大，碧玺、玛瑙、合成刚玉及月光石的磁化率为负，表现出抗磁性