(Right now I don't know if artifacts can be claimed, but bear with me, here.)
So, we all know about dwarven love (it involves spores) and artifacts. So here's my idea to make some sort of combination between the two.
There's two statuses to dwarven love (if you discount "friends"): in love and married. So, suppose that Urist McClothier (male) and Urist McMason (female) are in love. They snuggle up at night, they feed eachother bits of kitten tallow roast over the dinner table (while a dozen alcoholic midgets get drunk as skunks around them, but hey, love's been known to take your peripheral vision away...), they take every fleeting moment beneath the moon to sit quietly by eachother on the riverbank, holding hands (the moon, because screw the sun, and the river only if there are no carp or alligators, 'course)... you know, if they're not murdered by goblins or beaten to death for failing to live up to an insane baron's mandates. C'est la vie. Well, suppose one day Urist McClothier gets inspired by a randomly wandering fey, or posessed, or what-have-you. He disappears into his workshop after assembling some gems, silk cloth, and other such things, and comes out with Randomname, a giant cave spider silk skirt! It menaces with spikes of black pyrope and is decorated with bands of draltha leather*.
So maybe he has no idea how he made that (posession sucks like that), but it's a very beautiful skirt. So who better to give it to than the girl of his dreams, Urist McMason?
So such is done, and sooner rather than later, wedding bells are ringing. Except dwarves don't have bells...so they're probably poking kobolds to make them sing some wedding songs ("Babacadis! Babacadis!" to the tune of "Here Comes The Bride"). Because hey, if some guy gives you an artifact skirt that menaces with badass gem spikes, you know he's a keeper.
So basically this would be a somewhat different form of a "wedding ring". I guess if a married dwarf made a cool item they'd give it to their significant other, but that seems like there's less potential for things to happen (except maybe a baby a few months later...hurr hurr). It's pretty much just a glorified jump from "lovers" to "married couple", but it'd add a bit of flavour to the game, I think...you know, it'd just be cool.
(I am a sap. Shut up.)
*Based on an artifact from my own fort, which I would have worn because it sounded awesome, if not for the fact that I am a dude and not a transvestite. Oh well.