Which preposition to use with argent

in Occurrences 2%

Rare, Mistris, heeres a cheeke like a Camelion or a blasing Star, you shall heere me blaze it; heere's two saucers sanguine in a sable field pomegranet, a pure pendat ready to drop out of the stable, a pin and web argent in hayre de Roy.

on Occurrences 1%

Gower's arms are, Argent on a cheveron, azure,

Which preposition to use with  argent