This tag is currently connected to three missing artists whose pixiv username is "platinumcorundum". Probably they are the same person.

• Artist name: 佐藤 栗 (さとうまろん, Satou Maron) or 赤星 まろん (Akahoshi Maron, reading is a best guess)
• Circle name: RED STAR11
• Drawr account: http://drawr.net/platinumcorundum
• Pixiv account(deleted): http://www.pixiv.net/member.php?id=1976622
• Pixiv image server URL: http://img54.pixiv.net/
• Danbooru search: source:http://img54.pixiv.net/img/platinumcorundum/*

• Artist name: 佐藤 栗 (Satou Maron) or "Satouke"
• Site name: RED STAR11
• Home page (dead): http://satouke.sannasubi.com/
• Pixiv account(deleted): http://www.pixiv.net/member.php?id=1711117
• Tinami account (deleted): http://www.tinami.com/creator/profile/16744
• Pixiv image server URL: http://img49.pixiv.net/
• Danbooru search: source:http://img49.pixiv.net/img/platinumcorundum/*

• Artist name: はくぎん (Hakugin)
• Pixiv account(deleted): http://www.pixiv.net/member.php?id=277708
• Pixiv image server URL: http://img16.pixiv.net/
• Danbooru search: source:http://img16.pixiv.net/img/platinumcorundum/*