Biography
There are multiple artists named Purple Stone:
1) Purple Stone was a japanese visual kei band that formed in Osaka, Japan and started its activities in 2013/03/30. They disbanded in November of 2018.
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Members include: keiya (ex-HAZZE) on vocals, GAK on Gt.&Prog., and 風麻FUMA (ex-HAZZE) on bass.
Discography
2013.06.07 Scar (Live Distributed Single)
2013.11.27 - NEXUS (1st Mini Album)
2014.11.26 - 甘酸っぱいマンゴー Amazuppai Mango (1st Single)
2015.07.01 - アオイヤミ Aoiyami (2nd Single)
2015.12.09 - 回転木馬 Kaiten Mokuba (3rd Single)
2016.04.20 - 歌舞伎町バタフライ Kabukichou Butterfly (4th Single)
http://purplestone.jp/
2) Purple Stone is a dreampop project from Stockholm, Sweden
Biography text from Last.fm, available under CC BY-SA.