Company policy on engagement rings

[Juud]

Originally Posted by arewehomeyet

... and as far as I'm aware you can't ban items of religion ...

You are not familiar with this case then?

A British Airways worker suspended for wearing a Christian cross said she was “very disappointed” at losing her claim for religious discrimination.

link

Hoopla, on the one hand you write that the company has recently changed the rules, on the other that the uniform handbook has not been updated for 15 years.
I think the answer to your question lies right there.
If the written rules say she can wear her ring, she can.
If the written rules says she can't, then she can't.

If there is a discrepancy between the written rules and unwritten ones made up in an office somewhere, the company will be hard pushed to make the 'unwritten rule' stick.
IMHO.