Ultra Jewels are the key item in Kirby U: The Ultra Jewels. They look similar to Crystal Shards in Kirby 64. There is three in each level, when finding all you get access to the final star... Zero Star.
When defeating a boss, the boss drops a Big Ultra Jewel.
- Whispy Woods drops a red jewel.
- Pyramidios drops an orange jewel.
- Aqua Orbos drops a yellow jewel.
- The Fire Triplets drop a green jewel.
- Plasma Joker drops a light blue jewel.
- Matterzord drops a blue jewel.
- MZ-ZERO3 drops a purple jewel.
In Matter Star, seven statues of Kirbys holding jewels are there. Waddle Dee calls them the "Jewel Knights" in his diary. They represent all the Big Ultra Jewels, each statue is the same color as the jewel. When you interact with them, they say things.
"The big red jewel shows power. It has been given to a family of trees."
"The big orange jewel shows bravery. It has been hidden in temples."
"The big yellow jewel shows agility. It has been hidden underwater."
"The big green jewel shows knowledge. It has been kept in a boiling place."
Light Blue Jewel
"The big light blue jewel shows confidence. It has been hidden in an unknown place."
"The big blue jewel shows courage. It is one of the ancient jewels."
"Th- big p--p-e jew-l sh-ws th- h-ro's skill. It -s th- -ir-t jewel cre--ed.""The big purple jewel shows the hero's skill. It is the first jewel created."