Dimmable LED lights on a dimmer switch, they won't come on at all anymore. Do they still work?
Are they salvageable at all? Have I just ruined two otherwise perfectly good LED lights?


No, they are not salvageable.  Yes, you have just ruined two otherwise perfectly good LED lights.

Dimming, with a non-LED compatible dimmer or with non-dimmable LED lights, is not good for the lights. Dimming is not normally, as much as it might appear (and as I used to think) simply reducing the amount of current going to the lights. It is a bit more complex. LED lights (fluorescent too) can't simply take "any way of reducing the overall power" - they have to handle things in a special way or they will either die a painful death (as you found) or blink a lot - 50% on, 50% off = 50% light, but not in a terribly useful way.

Odds are if you had removed the lights right away after discovering the problem, they would be just fine today - the electronics are actually fairly resilient. But using them over an extended period time with a mismatched dimmer doomed them.