http://kissanime.ru/Anime/Houseki-no-Kuni-TV
Houseki no Kuni
Other name: Country of Jewels; Land of the Lustrous
Genres: Fantasy, Sci-Fi, Seinen
The 3D art is a bit unusual, but I feel it works well with the shiny detail-ness of the "Gems".
It has a soothing "Haibane Renmei" feel to it, which I kind of like.
http://kissanime.ru/Anime/Haibane-Renmei-Sub
Haibane Renmei
Other name: Charcoal Feather Federation
Genres: Drama, Fantasy, Slice of Life