Lace has been another one of those embellishments that I've always loved but stayed away from due to my fears of looking a little old lady-ish or too girly-girl or harlot-y (that's just me not knowing what works and what's overkill - nothing against lace).
I've stumbled upon lovely lace-embellished jewelry on Etsy recently and I think this is something I can easily pick up on. A nice wide collar with a handsome lace necklace to me somehow manages to look fancy yet casual, other-worldly yet modern and spare, at the same time.
Tree and Kimball
Little Miss Dress Up