Hello there, Thank you very much for reaching out to us. I'm sorry to hear that you are having trouble equipping this crystal. Please note that you will need to have completed the Praxic's Path questline in order to equip this. If you have completed this questline in its entirety and cannot equip it, to help us investigate further, can you provide us with a video showing the issue? You can upload it to one of the media-sharing websites listed below: - [url=http://www.youtube.com]YouTube[/url] - [url=http://www.x.com]X/Twitter[/url] - [url=http://www.imgur.com]IMGUR[/url]