Talk:Redania's Most Wanted/@comment-2601:18D:8800:465B:38CE:45:619E:2968-20181202135034/@comment-35089194-20190725180424

You already go to Skellige in Act 1 as part of the story. Giving the crystal to Yennefer yields the exact same result as giving it to Triss. You're certainly not being rushed to complete this quest at this point in the game, and the cutoff point is much later than you think it is.

Your presence on the wiki implies you had no issue finding this information yourself, information which can all be found on this exact page. Please, stop blaming the developers as if your inability to read is in any way their fault.