Holystone Pieces can be obtained by processing Ore +3 and processing Ore +4. You can either upgrade them to Holystone or use them as daily quest items in Mini Herodian Keeper NPC (beside Guild Manager NPC) at your HQ.
Brilliant HolyStone Piece
+4 Ores
Upgrading Relic Weapons (when become Holystone)
Shining HolyStone Piece
+4 Ores
Upgrading Special Weapons (when become Holystone)
Transparent HolyStone Piece
+4 Ores
Upgrading Leon Weapons (when become Holystone)
Dreaming HolyStone Piece
+1 +2 +3 Ores
Daily Quests
Silence HolyStone Piece
+1 +2 +3 Ores
Daily Quests
Iron HolyStone Piece
+1 +2 +3 Ores
Daily Quests
