A list of unique ioun stones. Typical ioun stones are listed at the main page.
“The Trollblood ioun stone was a unique ioun stone giving martial prowess against trolls and the...Trollblood ioun stone
“The mantle stone of Vhyridaan was an ioun stone that held and protected against magical spells...Mantle stone of Vhyridaan
“Balian's yellow ioun stone was a unique ioun stone that boosted a random physical or mental...Balian's yellow ioun stone
“This incandescent blue ioun stone was a unique ioun stone created by the githzerai that boosted...Incandescent blue ioun stone (githzerai)