ARENA 01 - Akiyama Mio Eucliwood Hellscythe Nakano Azusa Yuzuriha Inori Suzumiya Haruhi Nakamura Yuri Shana ARENA 02 - Fate Testarossa Fujibayashi Kyō Senjōgahara Hitagi Kisaragi Chihaya Nia Teppelin Yui Higurashi Kagome ARENA 03 - Lindy Harlaown Orimura Chifuyu Hōsen Elis Lacus Clyne Patchouli Kno...

ARENA 01 Konoe Subaru - Fear Kubrick ARENA 02 Nakagawa Kanon - Elucia de Lute Ima ARENA 03 Shiomiya Shiori - Tōwa Erio ARENA 04 Suzutsuki Kanade - Honma Meiko ARENA 05 Irisviel von Einzbern - Nakamura Yuri ARENA 06 Aragaki Ayase - Haruna ARENA 07 Akemi Homura - Victorique de Blois ARENA 08 Shimada ...

ARENA 01 Kuroi Mato - Kashiwazaki Sena ARENA 02 Iwasawa Masami - Suzutsuki Kanade ARENA 03 Aragaki Ayase - Shimada Minami ARENA 04 Elucia de Lute Ima - Gasai Yuno ARENA 05 Honma Meiko - Haqua du Lot Herminium ARENA 06 Kirishima Shōko - Haruna ARENA 07 Kanzaki H. Aria - Tachibana Kanade ARENA 08 Kas...

ARENA 01 Makise Kurisu - Kasugano Sora ARENA 02 Nakagawa Kanon - Hasegawa Kobato ARENA 03 Himeji Mizuki - Akemi Homura ARENA 04 Tachibana Kanade - Irisviel von Einzbern ARENA 05 Kirishima Shōko - Eucliwood Hellscythe ARENA 06 Tōwa Erio - Shimada Minami ARENA 07 Kashiwazaki Sena - Haqua du Lot Hermi...

ARENA 01 Mikazuki Yozora - Honma Meiko ARENA 02 Gasai Yuno - Himeji Mizuki ARENA 03 Yuzuriha Inori - Hasegawa Kobato ARENA 04 Haruna - Yui ARENA 05 Gokō Ruri (Kuroneko) - Haqua du Lot Herminium ARENA 06 Aragaki Ayase - Eucliwood Hellscythe ARENA 07 Shiomiya Shiori - Kasugano Sora ARENA 08 Kanzaki H...

ARENA 01 Shiomiya Shiori - Kirishima Shōko ARENA 02 Kanzaki H. Aria - Haqua du Lot Herminium ARENA 03 Kasugano Sora - Kōsaka Kirino ARENA 04 Haruna - Charlotte Dunois ARENA 05 Kuroi Mato - Honma Meiko ARENA 06 Hasegawa Kobato - Himeji Mizuki ARENA 07 Gokō Ruri (Kuroneko) - Sakura Kyōko ARENA 08 Fea...

ARENA 01 Yui - Shiomiya Shiori ARENA 02 Tachibana Kanade - Honma Meiko ARENA 03 Yuzuriha Inori - Nakagawa Kanon ARENA 04 Elucia de Lute Ima - Hasegawa Kobato ARENA 05 Mine Riko - Nakamura Yuri ARENA 06 Kasugano Sora - Eucliwood Hellscythe ARENA 07 Kōsaka Kirino - Kirishima Shōko ARENA 08 Aragaki Ay...

ARENA 01 - Hasegawa Kobato Misaka Mikoto Yuzuriha Inori Nakano Azusa Kuroi Mato Aisaka Taiga Kashiwazaki Sena ARENA 02 - Eila Ilmatar Juutilainen Konpaku Yōmu Miyanaga Saki Fujibayashi Kyō Shirai Kuroko Ekaterina Kurae Hiiragi Kagami ARENA 03 - Sanya V. Litvyak Konohana Lucia Amae Koromo Fujibayash...

ARENA 01 Himeji Mizuki - Iwasawa Masami ARENA 02 Aragaki Ayase - Kirishima Shōko ARENA 03 Makise Kurisu - Kuroi Mato ARENA 04 Charlotte Dunois - Hasegawa Kobato ARENA 05 Kashiwazaki Sena - Yuzuriha Inori ARENA 06 Sakura Kyōko - Shimada Minami ARENA 07 Nakagawa Kanon - Honma Meiko ARENA 08 Irisviel ...

ARENA 01 Charlotte Dunois - Mikazuki Yozora ARENA 02 Suzutsuki Kanade - Tōwa Erio ARENA 03 Gasai Yuno - Makise Kurisu ARENA 04 Himeji Mizuki - Eucliwood Hellscythe ARENA 05 Irisviel von Einzbern - Gokō Ruri (Kuroneko) ARENA 06 Kirishima Shōko - Tachibana Kanade ARENA 07 Yui - Haqua du Lot Herminium...

Charlotte Dunois : 58.0% : UNDER - 3 Tōwa Erio : 60.0% : UNDER - 3 Makise Kurisu : 63.0% : UNDER - 4 Eucliwood Hellscythe : 71.0% : OVER - 2 Gokō Ruri (Kuroneko) : 66.0% : UNDER - 3 Tachibana Kanade : 63.0% : OVER - 5 Yui : 60.0% : OVER - 3 Fear Kubrick : 59.0% : UNDER - 4 Nakamura Yuri : 70.0% : U...

ARENA 01 Yuzuriha Inori - Tōwa Erio ARENA 02 Haruna - Kashiwazaki Sena ARENA 03 Gokō Ruri (Kuroneko) - Konoe Subaru ARENA 04 Eucliwood Hellscythe - Iwasawa Masami ARENA 05 Kōsaka Kirino - Mine Riko ARENA 06 Elucia de Lute Ima - Charlotte Dunois ARENA 07 Fear Kubrick - Victorique de Blois ARENA 08 H...

Tōwa Erio : 50.0% : UNDER - 3 Kashiwazaki Sena : 63.0% : UNDER - 3 Gokō Ruri (Kuroneko) : 64.0% : OVER - 4 Eucliwood Hellscythe : 73.0% : UNDER - 4 Kōsaka Kirino : 57.0% : OVER - 3 Charlotte Dunois : 55.0% : OVER - 1 Victorique de Blois : 52.0% : OVER - 5 Shiomiya Shiori : 58.0% : UNDER - 4 Nakamur...

ARENA 01 Mikazuki Yozora - Kirishima Shōko ARENA 02 Makise Kurisu - Elucia de Lute Ima ARENA 03 Honma Meiko - Kashiwazaki Sena ARENA 04 Kuroi Mato - Kasugano Sora ARENA 05 Shiomiya Shiori - Himeji Mizuki ARENA 06 Nakagawa Kanon - Eucliwood Hellscythe ARENA 07 Gasai Yuno - Kōsaka Kirino ARENA 08 Sak...

Mikazuki Yozora : 52.0% : OVER - 4 Makise Kurisu : 52.0% : OVER - 4 Kashiwazaki Sena : 68.0% : UNDER - 3 Kuroi Mato : 61.0% : OVER - 3 Himeji Mizuki : 54.0% : UNDER - 4 Eucliwood Hellscythe : 70.0% : OVER - 2 Kōsaka Kirino : 68.0% : UNDER - 4 Charlotte Dunois : 66.0% : UNDER - 4 Akemi Homura : 51.0...

9, 25

ARENA 01 Gokō Ruri (Kuroneko) - Shimada Minami ARENA 02 Honma Meiko - Eucliwood Hellscythe ARENA 03 Sakura Kyōko - Nakamura Yuri ARENA 04 Hasegawa Kobato - Haqua du Lot Herminium ARENA 05 Charlotte Dunois - Gasai Yuno ARENA 06 Mikazuki Yozora - Kuroi Mato ARENA 07 Tachibana Kanade - Suzutsuki Kanad...

Gokō Ruri (Kuroneko) : 70.0% : UNDER - 3 Eucliwood Hellscythe : 69.0% : OVER - 2 Nakamura Yuri : 66.0% : UNDER - 2 Hasegawa Kobato : 60.0% : UNDER - 2 Charlotte Dunois : 67.0% : UNDER - 3 Kuroi Mato : 57.0% : UNDER - 4 Tachibana Kanade : 77.0% : UNDER - 4 Akemi Homura : 51.0% : OVER - 2 Victorique ...

^ It should say Aquamarine Period.

I'm really glad the art contest is back this year, even with an imaginary Seitokai

If this is still open, I nominate:

Suiseiseki 2009 Emerald
Kanade 2011 Topaz
Ruri 2011 Sapphire

The first two have nice nature backgrounds that blend with the characters, and Ruri's has an artistic quality to it that I really like.