An Encyclopaedia of Indian Archaeology v1.c21.s8.4

v1.c21.s8.4

HASTINĀPURA, PGW level, two specimens: the first, a brownish bangle, an ordinary soda-lime silicate containing some oxide of iron accounting for its colour, with a low alumina and silica content and being soft suitable for bangle-making; and the second a black glass bangle, also of soda-lime silicate, with a low proportion of silica and alumina, therefore soft and easy to work, the black colour being due to the presence of iron oxide. After fabrication the objects were probably subjected to careful annealing. When excavated the objects were fresh and free from decomposition and devitrification. The specific gravity lies between 2·55 and 2·6; the hardness is about 6.