Words for gold, silver; PIE?

The following are lexemes from indic languages:

samanom = an obsolete word for gold (Santali. Campbell lexicon)

sambr.o bica = gold ore (Mundarica)

hom = gold (Kannada)

somnakay = gold (Gypsy)

assem = electrum (Old Egyptian. cf. Joseph Needham)

soma man.al = sand containing silver ore (Tamil. Winslow lexicon)

Substrates of mleccha? Vedic, Avestan! soma, haoma.

Kalyanaraman