Template:Infobox Item Pure gem are items used for training pure cards and unlocking pure card side stories. To train a 3☆ card, 100 pure gems are needed. To train a 4☆ card, 200 pure gems are needed. To unlock the second side story of a 3☆ card, 600 pure gems are needed. To unlock the second side story of a 4☆ card, 1200 pure gems are needed.