Special Items & Artifacts of the Ultima fiction
Ancient Mage's Hat
A mage's hat said to have magical abilities offered by Nystul in return for any pieces of blackrock recovered by the citizens of Brittainia.

        Lord Blackthorn returns

Ancient Robe
A brown robe said to have magical abilities offered by Nystul in return for any pieces of blackrock recovered by the citizens of Brittainia.  This robe had a large amount of teleportation charges.

        Lord Blackthorn returns

Ancient Staff
A gnarled staff said to have magical abilities offered by Nystul in return for any pieces of blackrock recovered by the citizens of Brittainia.

        Lord Blackthorn returns

Bell of Courage
The Bell of Courage has been mentionned in Ultima Online history, but it existed long before. Sage Humbolt used it to create a potion that would allow him to consume the hearts of the evil liches, Lathiari and Kyrnia. It is a lengendary artifact, along with the Candle of Love and the Book of Truth. Together, these three items are the embodiment of the three Principles that form the Virtues.

        Sage seeks solutions
        Wake for Sage Humbolt

Blackrock
In the previous Ultimas, blackrock was used by The Fellowship to build the Black Gate, a magical doorway that would have allowed the Guardian to enter Britannia physically. Blackrock was almost indestructible.

In Ultima Online, Nystul himself admits he does not know the purpose of blackrock, nor it's relation with the Armageddon spell. But it is clear by now that the Followers of Armageddon are seeking blackrock actively, and we can only speculate that it will allow them to cast that dreaded spell.  Please see below about Crystalline Blackrock for more information.

        Geoffrey announces plans to return the FoA prisonners to Yew
        Lord Blackthorn returns
        Nystul collects the blackrock of the FoA

Book of Truth
Like the Bell of Courage and the Candle of Love, the Book of Truth comes from previous Ultima lore. It is the symbol of the Principle of Truth. It has not been mentioned in Ultima Online yet.
Box of Dreams (Baja)
The Box of Dreams is mentionned but once, in a side-quest. Nevertheless, it sounds like a powerful artifact, capable of influencing the dreams of Britannians.
        Box of Dreams
Candle of Love
The Candle of Love is the embodiment of the Principle of Love, and an artifact similar to the Bell of Courage and the Book of Truth. It has not been mentionned in Ultima Online yet.
Codex of Ultimate Wisdom
(Incomplete entry)
Crag
A staff of unknown origin, but its strength is reknown throughout the land. It has been handed down from family member to family member in Sage Humbolt's family for may generations. Sage Humbolt has graciously sacrificed this heirloom to entice the good citizens to find the items he needs to defeat the liches Lathiari and Kyrnia.

      Sage Humbolt Gives Magic Weapons to Questors

Crystalline Blackrock
Crystalline Blackrock is a derivative of blackrock.  This type was found in the obsidian chests guarded by obsidian wisps during the FoA chronicles.  Crystalline Blackrock contained a large number of Teleportation charges.  Please see above on Blackrock for more information.
HammerFist
A mace hewn from a molten blob by the Bobbit hero Bonchu. Bonchu was thought to have been the first Bobbit to single handedly strike down an Ettin. Alas, he was not strong enough to save his race from the hideous plague that the fiend Mondain released upon them before the end.

      Sage Humbolt Gives Magic Weapons to Questors

Gem of Immortality
A powerful magical artifact, the jewel was originally a possession of Wolfgang, the last king of Akalabeth. He offered it to his second son, Mondain, in hopes that it would turn him back from the dark paths he trod. Mondain instead slew his father for control of the Gem, and twisted its powers to make himself immortal and wreck havoc upon Sosaria. The Gem contained a perfect likeliness of the world, and when it was shattered by the Stranger, reality was broken into multiple shards.
Jewel Encrusted Warlord Sword of Vanquishing
A viking sword removed from the corpse of a Warlord that attacked Trinsic with a horde of Lizardmen (c. summer 1998.)  Deals damage like a viking of vanquishing.
Magic Sword of Envy (Great Lakes)
This is one of seven Swords of Sin (as part of an early Seer Quest in 1997.)  Each sword was taken from the body of a Shadow Lord, 7 dark warlords that attacked anything on sight (played by counsellors).  Each deals damage higher then a viking sword of vanquishing.  Currently resides in the Museum of Memories.
Magic Sword of Lust (Great Lakes)
This is one of seven Swords of Sin as part of an early Seer Quest in 1997.  Each sword was taken from the body of a Shadow Lord, 7 dark warlords that attacked anything on sight (played by counsellors).  Each deals damage higher then a viking sword of vanquishing.  Currently resides in the Museum of Memories.
Orcish War Drum(Red) (Drachenfells)
A red drum.  It is said there is a matching purple drum as well.
Pain Maker (Great Lakes)
An axe known to cast random magical offensive spells on its victim.  Currently resides in the Museum of Memories.
Relics of Mondain
Mondain, the evil wizard, was slain. But some of his body parts were kept as relics, and they probably still contain magical energy. Each year, the relics are taken from town to town to be displayed as a reminder of what we suffered from him. But this year there was two attempt at stealing them, twice successful. The first one when a monk from Empath Abbey, Brother Olic, was taking them from Vesper to Britain, he was attacked and captured by orcs. Courageous heroes rescued him (and the relics) from the dungeon Covetous. The second time, was during the Followers of Armageddon episode. Someone stole the relics, and this time they were not recovered. It is not sure if the thief was a member of the FOA.
Rylthynynnolinshyn
A bow named for its elven origin. Drawn tight by the great elven bowyer Iynolinyshyn Fyrhyinjuionen (referred to as Iyno by his human friends) this bow struck down a dragon, supposedly, with but one shot. Although its power is diminished from those wilder times of more powerful magic, it is still quite formidable.

      Sage Humbolt Gives Magic Weapons to Questors

SerpentBane (Pacific)
This spear was created to defeat the Ivory Serpent, using a magical spear (spear of vanquishing) coated with a special poison concocted by Ben Kahns, which would prevent the Serpent from regenerating it's wounds. The name of the weapon was etched on it by Zemaj. The weapon was given to those who helped against the Serpent, and it's current whereabouts are unknown.
Serpent's Bite (Pacific)
After the Ivory Serpent was slain, 'a rusty halberd' was found inside his stomach (amongst other things, to be sure). The halberd was cleaned and given to Wolfgar, one of the adventurers who helped Ben Kahns defeat the serpent.
Staff of Dar-Salaam (Great Lakes)
A strange blue staff of unknown properties that was inscribed with the words "Staff of Dar-Salaam" wielded by Oberon the Healer.  Oberon claimed to have found it, "between the worlds of the living and the dead".
Staff of the Elements (Sonoma)
(Incomplete entry)

        Harris and the Staff of the Elements

Statue of Unity (Orcish artifact) (destroyed)
        Orc relic destroyed
StoneBite
A sword crafted by the Legendary Jindam Ro. A reknowned blacksmith and weapons crafter, he was the greatest metal smith of his age. Witnesses and legend say the he could fold metal with the slightest touch of his hand.

      Sage Humbolt Gives Magic Weapons to Questors

Sword of Annihilation (Great Lakes)
A viking sword found on the body of a Dread Lord. Currently resides in the Museum of Memories.
Uolinsho
A bow also crafted by Iyno. It was a gift to a human friend who lacked the grace and finesse to wield the elves normal bows. This weapon was a sign of the enduring friendship between elves and man.

      Sage Humbolt Gives Magic Weapons to Questors
 

Special thanks to several people, not limited to, but including: Blitz Pheonix [GL], Kaelynn [GL], Lord Tyr Nexus[DF],