Minerals and Metals in Ancient India v2.c43.s2.3

v2.c43.s2.3

The theory of origin (utpatti) of the gems was shrouded in the extravagant emphasis on a myth which we would discuss later. The texts discussed ākaras or the mine-sites. The colour and ‘castes’ (categories) of individual gems were mentioned. The defects of gems and the qualities of excellent gems were specifically discussed. In order to be acceptable, the gems must have well-defined and uniform colour, lustre and geometrically defined crystal shapes. There must be appropriate directionality of radiance when a gem is held against the sun (AM, 213).