Minerals and Metals in Ancient India v2.c43.s3.t6.1
Minerals and Metals in Ancient India v2.c43.s3.t6.1
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v2.c43.s3.t6.1
These three gem-minerals were known in the ancient world but were often confused with each other on account of their similar hardness and due to their occurrence in a wide range of colours, often resembling each other (vide Table 7.2).