Copy from other thread:
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The version of FA loaded by the Icon Picker in Gantry is slightly older than when Bluesky was added to FA. They have a free/open source version you can add manually though. IMO the easiest way to do that is via CDN hosted link
You can grab various links here:
cdnjs.com/libraries/font-awesome
Or just use this "ALL" link for everything (maybe you wanna be a little "lighter" and just load the Brands icons, your call... you are sort of double loading FA since Gantry will load its early v6 version as well)
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.7.1/css/all.min.css" integrity="sha512-5Hs3dF2AEPkpNAR7UiOHba+lRSJNeM2ECkwxUIxC1Q/FLycGTbNapWXB4tP889k5T5Ju8fs4b1P5z/iB4nMfSQ==" crossorigin="anonymous" referrerpolicy="no-referrer" />
Put that in Base Outline > Page Settings > Head Area > Custom Content
Then you can manually load the icon with HTML:
<i class="fa-brands fa-bluesky"></i>
or, you can simply put the "fa-brands fa-bluesky" bit directly in the Social Particle or any other particle using Gantry's Icon Picker... I don't think it'll show up in the visual picker but you can just manually put those classes in for any given item.
The following users have thanked you: Jaime Gonzalez Magallanes, Bjorn Claes