The word "obryza" looks as a Polish one... Could be Russian as well, but it isn't.
If the word has not in fact gone in the other direction, then it may be of Persian descent:
ibrisIn Turkish
ibritz, I believe, although the normal word for gold is
altin.
(Altin Tepe = Gold Hill, a famous archeological site, and a gold mine. :-)Then there is:
obruss.um N 1 1
GEN P F uncommon
obrussa, obrussae N F [XXXCO]
assay; test; assaying/testing of gold; [
aurum ad ~ => tested/fine gold];
obruss.um ADJ 1 1 NOM S N POS
obruss.um ADJ 1 1 ACC S M POS
obruss.um ADJ 1 1 ACC S N POS
obrussus, obrussa, obrussum ADJ [XXXFO] veryrare
fine (gold); refined; assayed, tested (OLD);
Question is when did this word get into usage. It would be fun to do some serious etymological research here.
G/<