Amber, Agate, Topaz, Sugilite, Aventurine, Pearl, Sapphire, Jade, Obsidian, and Opal
we finally have a general sense of what they all look like, although Diamond is conspicuously absent (I guess he's not considered one of the "ten stonehearts" since he's above them all), and it seems that Opal is the highest ranking of them all
also they seem to be preparing for a war between the Aeons, which will probably be the main conflict the story is building towards (like genshin's war on celestia)
very interesting, can't wait to see where this goes