History of Technology in India, Vol. I: From Antiquity to c. 1200 A.D. v1.c18.s4.t4.36

v1.c18.s4.t4.36

The text has also mentioned the artificial preparation methods for a few gems and metals. That means in ancient times probably many metals could not be obtained in sufficient quantities in nature and this might have made them to think for some alternative sources to obtain metals and minerals and as a result artificial gem making and metal making methods were evolved.