What it says on the tin. I have inherited a diamond (3 mm) in a (small, unobtrusive) pendant that I would like to wear out and about, but apparently such an item is considered more of an "evening wear" type of thing. I don't like attracting attention with my jewelry. My question: what is the general etiquette for wearing diamonds or precious stones (that are of average size, not huge blingy boulders) if they are not set in wedding or engagement bands?