"A rat skin scarf."

Obtained by taking a rat corpse to the tanner?

"A gold necklace with sparkling sapphires."

Contains the spell of Protection from Cold.

"A diamond necklace with a glistening ruby."

Contains the spell of Protection from Fire and Ice with 2 or 3 charges.

"A twisted gold torc inscribed with glowing runes."

Contains spell of Protection from Stun and Death with 2 charges.

"An ivory brooch of seven intertwined dragons."

Contains spell of Protection from Stun and Death with 4 charges.

"A crystal hummingbird hanging from a golden chain."

Contains spell of Protection from Stun and Death with 6 charges (used to be 20 charges).

"A silver chain with a silver and onyx scorpion."

Contains the spell Neutralize Poison with 2 or 3 charges.

"A small silver dagger with an emerald blade hanging from a silver chain."

Contains the spell Protection from Poison with 20 charges. Dropped by Overlord.

"A gold chain with a jade pendant."

Contains the spell Locate with 3 charges.

"A necklace of lustrous black pearls."

Contains the spell Locate with 3 charges.

"A necklace of large pink pearls."

Contains the spell Locate with 3 charges.

"A leather armband studded with nodules."
"A leather armband studded with steel nodules." - item data  

May contain the spell of Strength. (+1).

"A wide steel armband with bold swirling lines."

Contains the spell of Strength. (+1 or +3 or +6).

"A silver bracelet set with violet carbuncles." 

Contains the spell of Stun Resistance or Shield (+3)? The one found on Mama contains Death Resistance?

"A wavy silver bracelet set with aquamarines." 

Contains the spell of Protection from Blind and Fear.

"A heavy golden bracelet patterned with maple leaves." 
"A heavy gold bracelet patterned with maple leaves." - item data

Contains the spell of Death Resistance or Protection from Stun and Death (Overlord).

"A jade bracelet."
"A malachite bracelet with glowing runes." - item data

Contains the spell of Stun Resistance. Commonly found on Leng Undead.

"A silver bracelet with sparkling scales."
"A bracelet of sparkling silver scales." - item data  

Contains the spell of Shield (+3) or Strength (+6).

"A silver bracelet set with tiny jade dolphins." 

Contains the spell of Breathe Water.

"A gold bracelet set with small mother-of-pearl crabs."

Usually contains the spell of Breathe Water.

"A platinum ring set with four sapphires clustered around a dazzling diamond."

Contains the spell of Protection from Cold.

"A shiny gold ring set with a tiny bejeweled scarab."

Contains the spell of Death Resistance.

"A flexible ring of interwoven gold wire."

Ring of dexterity. (+1)

"A brass ring engaved with undewcipherable symbols."

Ring of dexterity. (+1) (Fear Resist ring in IoK)

"A wide platinum band engraved with many tiny runes."

Ring of dexterity. (+2)

"A soft ring of tiny green feathers."

Contains the spell of Blind Resistance.

"A gold ring set with four small diamonds encircling a fiery ruby."

Contains the spell of Protection from Fire and Ice.

"A gold ring with a dazzling diamond nestled in a rosette of rubies."

Dropped by Carfel and Overlord?

"A small gold ring."

(Thieves would need these to make Recall Rings in IoK)

"A vermeil ring."

Contains the spell of Identify.

"A large silver ring, with a triangular piece of jade mounted among three small blue diamonds."

A Knight's ring, needed to cast Knight spells.

"A steel ring of a sinuous dragon biting its own tail."

Contains the spell of Lightning Resistance. Found in the Leng Drake's lair sometimes.

"A small gold ring emitting a faint blue glow."

A ring of recall.

"A small silver ring with a shiny black stone."

Contains the spell of Breathe Water.

"A gold ring with a small red gem set into it."

Contains the spell of Strength. (+1)

"A gold ring with a large red gem set into it."

Contains the spell of Strength. (+3)

"A small gold ring with a glowing red gem."

Contains the spell of Strength. (+6)

"A small iron ring with a large black stone."

Contains the spell of Shield. (+1 or +3)

"A large silver ring with a deep black stone set among rubies. There is an eerie glow coming from the stone."

Contains the spell of Protection from Stun and Death. (During Beta, dropped by Mama and later replaced by the Brooch - Alcor)

Contains the spell of Shield. (+3) (Available in the Underkingdom when it first came out)

No Longer Available