Technically, the ring was more properly part of the wedding, but this was Midgard and the little details of timing mattered much less than... just about any other part of this, given that the wedding was simply the dues one paid in order to be married. Loki slid the ring onto her waiting finger (as a matter of preparedness, he'd enchanted it to resize to fit her finger, and not to come off unless she removed it) then pulled her into another kiss.