I'm sorry I missed this post....
There is a working "Blue ribbon" group, the White Gold Taskforce run
by MJSA and WJC. Standards are being discussed, and will be
established with a scientific color coordinate system to enforce the
rule on what is the best white, not requiring rhodium, a middle white
with rhodium optional and an "off white" (all my terms not official
ones) that would require rhodium. Someday (I hope soon) the trade
will address rhodium performance standards. The task force includes
alloy folks, retail folks, color experts, you name it. Look to news
from MJSA or WJC for the official word so far.
Preciuos Metals West