My engagement ring is platinum and sapphire (it's pretty similar to the one in this icon)and I wear it all day. I do wear rubber gloves if I'm washing up or cleaning, but I'm not particularly careful about soap, hand lotion and so on. I notice you said to Sarah your ring is platinum, which is a very strong and unreactive metal, so providing you don't pour bleach on it it should be fine. I take my ring off when I sleep, partly because the setting is so high, so it catches on things, and partly because DF has a great hatred of me wearing rings in bed (but you're not properly naked!). Generally I don't put it on until I've washed and put lotion on in the morning, and I take it off when I shower, but mainly to save me polishing it up, ahahah.

The one thing which is worth checking is how the stone will react to water. If you have a precious stone like diamond or sapphire, it should be pretty impervious to most things, but there are certain stones which are more vulnerable. Opal is the main one - they get spoiled if they get too much exposure to wet.

So exciting, omg! Are you going to have a little ring exchaning ceremony? I feel you should do something special and make a little (private) event of it. I felt very strongly about getting a formal proposal for that very reason - I wanted it to be a bit of an event. DF did go down on one knee, although he picked the local scummy pub to do it in, which was - ahem - not quite what I had in mind. He was too excited to wait until he had me somewhere nicer, though, so it was romantic in a DF way ;)