Adamantine Armor is one of Erza Scarlet's armors.
The Adamantine Armor consists of a singular, blue chest plate with a lighter blue belt-like contraption around the waist. Three spikes line the top of the chest plate which gives way to a white neck brace split in the center to allow room for her chin. The shoulders are sectioned with a large spike dividing each section, the middle spike being the largest of the three. The gauntlets have only a few sections. Attaching to the elbows are two large white shields which give the armor its defensive power. A blue jewel lines the back of the hand. Attached to the bottom of the chest plate is two layer metallic skirt with small spikes hanging on the ends of each layer. A larger spike hangs inward on the bottom layer. Her legs are covered in a sectioned armor to match the rest of the armor with a pair of greaves starting at the knees. The greaves bear a blue design shaped like the large spike that hangs off the skirt. Several curving spikes attach just below the knee of the greaves. She wears a large spiked headdress atop her head with a reflective piece in the middle
Immense Defensive Power: This armor is the ultimate, high-level defensive stance. While wearing it, Erza is able to withstand the Magic beam fired by Phantom Lord's Magical Convergent Cannon: Jupiter. Despite receiving injuries and the armor breaking in the process, she still successfully protected the entire Fairy Tail Guild and all of its members with no harm coming to any of them.
Flight: While wearing this armor, Erza gains the ability to fly across short distances.
Adamantine Barrier: While equipped with the Adamantine Armor, the user combines its two shields, creating a large, aqua green, Magic barrier that can withstand spells as powerful as those of the Jupiter cannon. (Unnamed)
- Shields: Erza's Adamantine Armor has two bladed shields, three on each one, that when joined it creates an enormous Magical Barrier. Using this, she was able to stop the full force of Jupiter and prevent any harm from coming to her guildmates.