Upper layer of Blackstone Tower: Big Chief's red black hand drops purple dagger: Devil's Strike. General Da Kissas Falls: Purple two-handed sword, Shahram black sword.
Lower floor of Blackstone Tower: Wim Salac Waterfall: Dragon King Emblem.
Stansom: Balnazzar: The Book of Death, Agent, Baron rivendell: Sword of rivendell, Two-handed Sword. The reins (mount) of a dead army horse.
School of Mind: the staff of Dean Gardin, Dean of the School of Darkness, Ras Frost Flower: Olana's Embracing Cloth.
Blackstone Abyss: Ambassador Verallas: Ring of Fire, D 'Aglang Sorensen the Great: One-handed Hammer of Opponents.
Hammer of Doomsday: Tribute: Two-handed Axe of Ancient Tree Natural Enemy
Atahaka Temple: Eranikus's shadow: dragon's call, one-handed sword, Haka's incarnation: wind snake's arms, cloth clothes.
Marathon: Princess Seledes: Blade of Endless Darkness, French dagger.
Zulfarak: Two single-handed swords: (Attacker Susas)+(Defender Sagas) Synthesis: Purple Excalibur: Whip Susas.
Blood Monastery: Library-Austrian Master Duane: The Ring of the Hand of Death
In addition to these rare purple clothes, there are many (tradeable) purple clothes that have fallen all over the world. You will often see them in auction houses, such as Crowe's Blade, jacquard's Sun Yan Knife, Blood Blade, Heartbroken, Epiphany robe and so on. . . . A lot. If you like, collect as much as possible. Hehe, as a souvenir.