The Chisel (彫刻具座 Chōkokugu za)
Caelum itself is a weapon
Caelum, at its default form, is shaped like a sphere with a halo-like circle at top. It is made of metal and has lines tracing around its shape. The center of Caelum's default body is in a darker shade of gray than the rest of its body and there is a small white circle with a smaller light green circle inside, giving it the appearance of an eye. Caelum can expand its body so that it takes on different forms (sword, flight and cannon are so far the only known forms), but the main circle from its default body remains.
During the time with Katja, Caelum had small changes. Its "eye" appeared smaller in comparison. The lines crossing the darker shade of grey on Caelum's center are gone.
Oración Seis arcEdit
Caelum is summoned to do battle against Lucy Heartfilia. As it is summoned, it fires a blast at Aries and Loke despite Aries being on its side. Gemini then uses Caelum in sword form to attack Lucy but when Gemini refuses to hurt Lucy because Gemini realized Lucy's love for her Celestial Spirits, Angel takes Caelum to attack Lucy herself. However, she misses her shot against Lucy.
Key of the Starry Sky arcEdit
Note: Events in this arc occur only in the anime and do not constitute canon material.
Magic and AbilitiesEdit
Sword Form: In this form, Caelum transform into its namesake, a large chisel which is used as a sword-like weapon. The sphere transforms and protrudes a long, dark metal bar tipped with a chisel cut, and the Sphere features a handle which can be used as a hilt. Gemini, transformed as Lucy, was shown utilizing Caelum in sword form, and defeated Taurus with a blunt strike that sent him flying into the air.
Cannon Form: In this form, it appears as a high tech cannon that can launch powerful blasts of energy, which was shown to incapacitate both Leo and Aries and send them back to the Celestial Spirit World in one shot. 
Flight Form: In this form, it appears as a simple winged sphere that has displayed mobility. This form has yet to display any offensive or defensive abilities.
Immortality: As a Celestial Spirit, Caelum cannot die, unless it is somehow forced to stay in the Human World.
Appearances in Other MediaEdit
Fairy Tail Gekitotsu! Kardia DaiseidouEdit
Battles & EventsEdit
|No Known Key||Celestial Spirit King|
|Gold Keys||Aquarius • Leo • Taurus • Virgo • Cancer • Sagittarius • Aries • Gemini • Scorpio • Capricorn • Pisces • Libra|
|Silver Keys||Horologium • Plue • Lyra • Crux • Caelum • Nico • Pyxis|