Minerals and Metals in Ancient India v2.c43.s3.t6.4

v2.c43.s3.t6.4

Hessonite and hyacinth are so much alike that lot of hessonite, though inferior in brilliance and luster, were bought and sold in the European market as the coveted hyacinth. Similarly, the lighter variety of zircon or jargon from Matura in Sri Lanka often passed as ‘Matura diamond’ on account of its transparency, brilliance and high refractive index.